'He is one of the best FCA lawyers out there.' Chambers UK 2023
'He is creative, thoughtful and super responsive. A very effective advocate on his feet.' Chambers UK 2022
'He is a clever, versatile, no-nonsense barrister who adds real value in matters.' Legal 500 2022
'He absolutely knows the law like the back of his hand and is excellent tactically.' Chambers UK 2018
Overview
Recognised as an absolute leader in the fields of corporate crime and regulation; there is no one better at understanding what the client needs in these practice areas or who delivers it as well.
Corporate & Financial Crime
Jason Mansell is uniquely placed to deal with anything and everything an individual and corporate may face during the process of a criminal and linked regulatory investigation. An expert on corporate and financial crime, he regularly advises and acts on behalf of corporates and individuals in relation to market offences, bribery and corruption and anti-money laundering and proceeds of crime matters.
Regulatory
Jason has advised firms and individuals in relation to more than 100 FCA (formerly FSA) enforcement investigations and associated proceedings in the RDC, Upper Tribunal and High Court. He has also acted both for and against the Financial Reporting Council (formerly the AADB) in respect of disciplinary proceedings brought by the accountancy regulator. Many of his instructions result in no public outcome, preserving confidentiality. Jason's regulatory experience extends beyond the financial sphere as he assists professionals to navigate the potential issues brought about by their regulation. He is truly a leader of this field.
Reviews
Chambers UK 2023: Financial Crime – Band 1; Financial Crime: Corporates - Band 2; Financial Services – Band 2
Legal 500 2023: Business and Regulatory Crime (Including Global Investigations) – Tier 2; Financial Services Regulation – Tier 1
Chambers High Net Worth 2019: Financial Crime: High Net Worth Individuals – Band 1
"What he doesn't know isn't worth knowing." Chambers UK (2024)
'He can do heavyweight cases on his own and is comfortable with corporates and individuals. He can really pull the stops out and is great in the tribunal.' Chambers UK (2023)
‘Very strong advocate (written and spoken). Complete command of the law. Master strategist. Great with clients and solicitors. Very easy to work with.’ Legal 500 Business and Regulatory Crime (2023)
‘He has an almost unrivalled expertise in contested FCA matters combining great knowledge with a strong sense of tactics.’ Legal 500 Financial Services Regulation (2023)
'Very strategic. Really hard-working and knows his stuff. He's also creative, thoughtful and super responsive, which is what we want from a barrister.' Chambers UK Financial Crime (2022)
'He is creative, thoughtful and super responsive. A very effective advocate on his feet.' Chambers UK Financial Services (2022)
'He has an encyclopaedic knowledge of FCA rules and regulations. An excellent street-fighting defence counsel.' Legal 500 Financial Services (2022)
'He is a clever, versatile, no-nonsense barrister who adds real value in matters. Happy taking the lead or stepping in and out of a matter, bringing superb insight and strategic vision.' Legal 500 Business and Regulatory Crime (2022)
'A real expert at contentious FCA litigation. He has a lot of gravitas.' 'An outstanding junior with long experience on both sides of the fence as a regulatory lawyer in the FCA and on the defence-side.' Chambers UK Financial Services (2021)
'A safe pair of hands who is able to turn around work at an incredible pace.' 'Very knowledgeable on money laundering case law.' Chambers UK Financial Crime (2021)
'Quite simply what Jason doesn't know about FCA litigation isn't worth knowing - he is an absolute superstar with almost unrivalled expertise and great tactical acumen.' Legal 500 Financial Services (2021)
'He has a deep understanding of the law in this area and combines intelligence with commercial savvy.' Legal 500 Business and Regulatory Crime (2021)
‘First on the list to defend FCA investigations and proceedings, he is a man of great experience.’ ‘He's practical, responsive, clever and someone who really helps with the tactical application of a case.’ Chambers UK Financial Crime (2020)
‘He is very good on his feet and has a nice court manner – he gets complicated matters across in a straightforward way that judges find easy to deal with.’ ‘A user-friendly and very responsive barrister.’ Chambers UK Financial Services (2020)
‘He has great insight and pitch-perfect instincts.’ Legal 500 Crime Business and Regulatory Crime (Including Global Investigations) (2020)
‘As well as knowing his stuff, he has a fabulous bedside manner and can calm an anxious client very effectively.’ Legal 500 Crime (2020)
‘Fantastic and knows the FCA inside out in terms of processes.’ ‘He's very clever and exactly the person you want in your corner in a very technical City case.’ ‘He is fantastic with clients and has huge gravitas.’ ‘He sees the big picture of a case very quickly and doesn't just focus on the detail.’ Chambers UK Financial Crime (2019)
‘He is fantastic with clients and has huge gravitas.’ ‘He sees the big picture of a case very quickly and doesn't just focus on the detail.’ Chambers UK Financial Services (2019)
‘He is well regarded, has good commercial sense and does a lot of very decent work here.’ Chambers High Net Worth (2019)
‘A very well-regarded junior with unrivalled experience of both sides of the FCA fence.’ Legal 500 Business & Regulatory Crime (2018)
‘Excellent to have defence side on criminal regulatory matters.’ Legal 500 Financial Services (2018)
‘His knowledge and experience help him make a real difference for his clients.’ Legal 500 Fraud: Crime (2018)
‘Provides sensible practical advice and is well suited to dealing with complex cases.’ Chambers UK Financial Services (2018)
‘Offers an excellent client focused service. He is willing to roll up his sleeves and get stuck into the most difficult problems, and he always provides solid, tactical and commercial advice.’ Chambers UK Financial Services (2016)
‘He’s an extremely calming influence and good on the detail.’ Chambers UK Financial Services (2015)
‘Very knowledgeable and responsive to client needs.’ Legal 500 Business and Regulatory Crime (2015)
Professional Memberships
- ARDL
- FLA
- IBA
- Midland Circuit
- South Eastern Circuit
Education
- Hardwicke Scholar Lincoln's Inn
- Law LLB Hons
Recent Cases
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Jason Mansell represented David Boardman who had initially been charged by the Pension Regulator with 6 counts of making prohibited investments, in his capacity as a trustee of a company pension scheme. Mr Boardman denied the allegations and followin...
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Jason Mansell and Kathryn Hughes (instructed by Greg Brandman at Eversheds Sutherland International LLP) acted for Mohammad Ataur Rahman Prodhan, the former Chief Executive Officer of Sonali Bank (UK) Limited (SBUK) in FCA proceedings before the Upper Tri...
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Jason acted for the former finance director of a UK insurance company, facing an integrity inquiry relating to the alleged misuse and attempted acquisition of company assets. The client denied any wrongdoing and following a three and a half year investiga...
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Jason Mansell is currently acting for a financial services company in respect of a large multi-jurisdictional DoJ/FCA investigation concerning market manipulation by traders through allegedly fictitious trading. The criminal charges have been discontinued...
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Jason Mansell acted for a senior banker in connection with a dual track insider dealing/market abuse investigation relating to the alleged dissemination of price sensitive information.
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Advised a trader in connection with the FCA’s regulatory investigation of LIBOR.
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Jason Mansell was instructed to advise a trader in connection with the FCA's investigation of Libor.
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Defending a CEO of a regulated firm before the RDC for alleged oversight failings in relation to AML issues.
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Successful application before the RDC for revocation of a prohibition order.
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Advised a Firm in connection wth a FCA regulatory investigation concerning the sale of insurance products.
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Acted for the defendant company in connection with the SFO’s prosecution for alleged price fixing in the pharmaceutical industry.
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Acted for the FD of ISOFT PLC in relation to the FCA’s criminal prosecution for misleading investors.
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Advising a trader and rate submitter in connection with the SFO’s investigation of LIBOR.
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Advised in connection with cold-shouldering proceedings brought by the Takeover Panel.
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Advising the former FD of RSM Tenon PLC in connection with disciplinary allegations made by the FRC.
News
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Chambers and Partners released their rankings for Financial Crime: High Net Worth Individuals and QEB Hollis Whiteman and its members are acknowledged as leaders in the field.Chambers is ranked as Band 1 and nine members of Chambers are ranked as leader...
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Jason Mansell and Rhys Meggy instructed by Jill Lorimer and Anna Holmes at Kingsley Napley LLP acted for a cryptocurrency firm at an oral hearing before the FCA’s Regulatory Decisions Committee to determine whether the Firm met the statutory require...
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Chambers and Partners released their rankings for Financial Crime: High Net Worth Individuals today and QEB Hollis Whiteman and its members are acknowledged as leaders in the field.Chambers is ranked as Band 1 with sources describing us as "a set of chamb...
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Jason Mansell was instructed by Jill Lorimer of Kingsley Napley LLP to advise a claims management company in respect of its application for authorisation.When instructed initially the FCA had invited the firm to withdraw its application or enter into a vo...
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Jason Mansell and Tom Broomfield acted for a P2P lender whose application for authorisation had been refused by the FCA. The initial decision was successfully reversed.Following a contested hearing before the FCA’s Regulatory Decisions Committee th...
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Jason Mansell is currently advising Wellesley & Co Limited on a direct access basis in respect of FCA regulatory issues arising out of the CVA filed on 24 September 2020 by Wellesley Finance Plc.
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Jason Mansell acted for a director of a FCA regulated company in a cross border insider dealing investigation involving the FCA and the French Financial Regulator , the Autorité des Marchés Financiers (“AMF”).Following an interview under cauti...
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Jason Mansell acted for a claims management company that had been issued with a Warning Notice refusing its authorisation. Had the FCA’s action been successful, hundreds of the Firm’s employees would have been made redundant. Following a conte...
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Chambers & Partners’ High Net Worth publication ranks the top lawyers and law firms for international private wealth.Its 2019 edition launched on Thursday 11th June and marks the first time that Chambers HNW has featured barristers who specialise in...
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Mr Prodhan has referred a Decision Notice issued by the FCA to the Upper Tribunal.
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Joint event hosted on 2nd October at the Radisson Blu Hotel, Jersey.
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Jason Mansell acted for a senior employee of a PLC who on multiple occasions and in breach of internal policy traded in his employers' securities at times when the FCA suspected he might have been in possession of price sensitive information., After a ...
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William Boyce QC and Jason Mansell acted for Guillaume Adolph in respect of the FCA’s investigation as to whether he had been knowingly concerned in a breach by Deutsche Bank of Principle 5 (market conduct).
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Jason Mansell and Rachna Gokani acted for former RBS trader Neil Danziger in connection with contested regulatory proceedings before the RDC arising out of the FCA’s investigation of LIBOR. Jason and Rachna were instructed by Ben Rose and Charles Ku...
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Matter concerned a bank employee who was alleged to have passed price sensitive information.
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Details of the rankings and commentaries will be published in November 2017 in the Chambers UK Bar Directory 2018.
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QEB Hollis Whiteman member Jason Mansell (instructed by Kingsley Napley) acted for Robin Chhabra in respect of his successful application for a prohibition order imposed in 2010 to be revoked.
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Jason Mansell, barrister at QEB Hollis Whiteman, commented on the conviction of trader Mark Lyttleton for two counts of insider dealing in a prosecution brought by the FCA. Lyttleton will be sentenced on 21st December.Read the Bloomberg case report and co...
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Jason Mansell comments on Operation Tabernula verdicts. http://www.bloomberg.com/news/articles/2016-05-09/ex-deutsche-bank-broker-among-two-guilty-in-insider-trading-case
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Following a contested hearing, the FCA's own Regulatory Decisions Committee has directed that no action should be taken against a CEO of a former regulated firm in connection with allegations concerning the alleged appropriation of client monies. Jason w...
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As reported in the Telegraph and other newspapers, the FCA's own Regulatory Decisions Committee has directed that no action should be taken against a former senior trader at UBS accused of alleged LIBOR manipulation. Jason Mansell was instructed b...
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Jason Mansell acted on behalf of the Moorhouse Group Limited (Andrew Katzen at Hickman Rose instructing) in relation to the FCA's investigation concerning the sale of add on products to new commercial customers during 2012. Instructed from the outset a...
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Jason Mansell has joined QEB Hollis Whiteman and Lucy J. Kennedy has returned to the set to reinforce its leading Business Crime and Regulatory practice. Jason Mansell Click here for ProfileJason, who has advised in an exceptional number of investigations...
Articles
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Jason Mansell is a barrister specialising in FCA litigation. He has advised firms and individuals in relation to more than 100 FCA enforcement investigations and associated proceedings in the RDC, Upper Tribunal and High Court. In this article Jason revi...
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A Briefing Note by Jason Mansell and Kathryn Hughes.In a long-awaited judgment, the Supreme Court has unanimously rejected the Serious Fraud Office’s (“SFO”) claim that its powers under s.2(3) of the Criminal Justice Act 1987 (“CJA...
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Part 2 of a special two part analysis by Nicholas Griffin QC, Jason Mansell, Tom Broomfield and Rhys Meggy.
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Part 1 of a special two part analysis by Nicholas Griffin QC, Jason Mansell, Tom Broomfield and Rhys Meggy.
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Reproduced with kind permission of Lexis Nexis
Corporate and Financial Crime
A senior junior with unrivalled expertise of corporate and financial crime and their linked regulatory proceedings; he is a true leader in the field.
Overview
Jason Mansell is uniquely placed to deal with anything and everything an individual and corporate may face during the process of a criminal and linked regulatory investigation. An expert on corporate and financial crime, he regularly advises and acts on behalf of corporates and individuals in relation to market offences, bribery and corruption and anti-money laundering and proceeds of crime matters.
Experience
Jason defends individuals and corporates under criminal investigation by the SFO, FCA and CPS. He is often instructed by corporates in connection with criminal compliance issues under the Proceeds of Crime Act 2002, Bribery Act 2010, Enterprise Act 2002, and export control legislation.
Jason has been instructed in 20 criminal investigations and inquiries for insider dealing, market abuse and market manipulation, including defending the former finance director of iSOFT Group Plc in relation to allegations of market manipulation and acting in FSA v Littlewood. Pre-charge, Jason was instructed in Operation Tabernula and Operation Saturn, the FCA’s largest insider dealing investigations to date.
Jason advises corporates in relation to disclosures to the SFO. He acted for a major bank in connection with the SFO’s investigation of the forex market and for individuals in connection with the alleged manipulation of LIBOR and EURIBOR.
He acted for Standard Bank in connection with an allegation of overseas bribery and a deferred prosecution agreement. He has also advised a number of senior executives in connection with proposed SOCPA agreements and is highly regarded within the market for his strategic vision and tactical awareness. Jason has a particular interest in Proceeds of Crime Act issues and regularly advises regulated sector firms and individuals on their statutory and regulatory obligations.
Jason is also an expert in data protection issues and represented the defendant company and its CEO in the largest prosecution brought by the ICO.
Jason draws on his previous experience as a regulator, prosecutor and senior lawyer at Allen & Overy LLP to deploy the strategy and tactics necessary to achieve the best possible results. Adept at the intricacies of financial crime, he is exceptionally bright and strategically astute, a pleasure to work with and someone who fights for his clients.
Notable Cases
SFO v X PLC
Instructed to advise a High Street Bank in relation to the SFO investigation of FOREX.SFO v Standard Bank
Instructed to advise the Bank in relation to the investigation of allegations of overseas bribery which culminated in a DPA.SFO v X
Advising an individual in connection with the SFO’s investigation of Libor.SFO v M
Acting for M in relation to regulatory and criminal proceedings concerning the alleged manipulation of EURIBOR.FCA v X
Senior manager being disciplined by FCA for alleged Libor manipulation and oversight failings.RE: J
Advised the Managing Director of a company in respect of a US/UK investigation in relation to alleged breaches of Iranian sanctions.Reviews
Chambers UK 2023: Financial Crime – Band 1; Financial Crime: Corporates - Band 2; Financial Services – Band 2
Legal 500 2023: Business and Regulatory Crime (Including Global Investigations) – Tier 2; Financial Services Regulation – Tier 1
Chambers High Net Worth 2019: Financial Crime: High Net Worth Individuals – Band 1
'He can do heavyweight cases on his own and is comfortable with corporates and individuals. He can really pull the stops out and is great in the tribunal.' Chambers UK (2023)
‘Very strong advocate (written and spoken). Complete command of the law. Master strategist. Great with clients and solicitors. Very easy to work with.’ Legal 500 Business and Regulatory Crime (2023)
‘He has an almost unrivalled expertise in contested FCA matters combining great knowledge with a strong sense of tactics.’ Legal 500 Financial Services Regulation (2023)
'He is creative, thoughtful and super responsive. A very effective advocate on his feet.' Chambers UK Financial Services (2022)
'Very strategic. Really hard-working and knows his stuff. He's also creative, thoughtful and super responsive, which is what we want from a barrister.' Chambers UK Financial Crime (2022)
'He has an encyclopaedic knowledge of FCA rules and regulations. An excellent street-fighting defence counsel.' Legal 500 Financial Services (2022)
'He is a clever, versatile, no-nonsense barrister who adds real value in matters. Happy taking the lead or stepping in and out of a matter, bringing superb insight and strategic vision.' Legal 500 Business and Regulatory Crime (2022)
'A real expert at contentious FCA litigation. He has a lot of gravitas.' 'An outstanding junior with long experience on both sides of the fence as a regulatory lawyer in the FCA and on the defence side.' Chambers UK Financial Services UK (2021)
'A safe pair of hands who is able to turn around work at an incredible pace.' 'Very knowledgable on money laundering case law.' Chambers UK Financial Crime (2021)
'Quite simply what Jason doesn't know about FCA litigation isn't worth knowing - he is an absolute superstar with almost unrivalled expertise and great tactical acumen.' Legal 500 Financial Services (2021)
'He has a deep understanding of the law in this area and combines intelligence with commercial savvy.' Legal 500 Business and Regulatory Crime (2021)
‘First on the list to defend FCA investigations and proceedings, he is a man of great experience.’ ‘He's practical, responsive, clever and someone who really helps with the tactical application of a case.’ Chambers UK Financial Crime (2020)
‘He is very good on his feet and has a nice court manner – he gets complicated matters across in a straightforward way that judges find easy to deal with.’ ‘A user-friendly and very responsive barrister.’ Chambers UK Financial Services (2020)
‘He has great insight and pitch-perfect instincts.’ Legal 500 Crime Business and Regulatory Crime (Including Global Investigations) (2020)
‘As well as knowing his stuff, he has a fabulous bedside manner and can calm an anxious client very effectively.’ Legal 500 Crime (2020)
‘Fantastic and knows the FCA inside out in terms of processes.’ ‘He's very clever and exactly the person you want in your corner in a very technical City case.’ ‘He is fantastic with clients and has huge gravitas.’ ‘He sees the big picture of a case very quickly and doesn't just focus on the detail.’ Chambers UK Financial Crime (2019)
‘He is fantastic with clients and has huge gravitas.’ ‘He sees the big picture of a case very quickly and doesn't just focus on the detail.’ Chambers UK Financial Services (2019)
‘He is well regarded, has good commercial sense and does a lot of very decent work here.’ Chambers High Net Worth (2019)
‘A very well-regarded junior with unrivalled experience of both sides of the FCA fence.’ Legal 500 Business & Regulatory Crime (2018)
‘Excellent to have defence side on criminal regulatory matters.’ Legal 500 Financial Services (2018)
‘His knowledge and experience help him make a real difference for his clients.’ Legal 500 Fraud: Crime (2018)
‘Provides sensible practical advice and is well suited to dealing with complex cases.’ Chambers UK (2018)
‘He absolutely knows the law like the back of his hand and is excellent tactically.’ ‘He is really good on financial crime because he is a top specialist on the FCA side.’ Chambers UK (2018)
‘Extremely hard-working, and has fantastic judgement and great client care.’ Chambers UK (2017)
‘Excellent in cases where the financial and the regulatory cross over.’ Legal 500 (2017)
‘He understands the needs and concerns of corporate clients and can speak their language. His advice has an application not just to the criminal law but to the wider commercial interests of the entity.’ Chambers UK (2016)
Recent Cases
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Jason Mansell represented David Boardman who had initially been charged by the Pension Regulator with 6 counts of making prohibited investments, in his capacity as a trustee of a company pension scheme. Mr Boardman denied the allegations and followin...
-
Jason Mansell and Kathryn Hughes (instructed by Greg Brandman at Eversheds Sutherland International LLP) acted for Mohammad Ataur Rahman Prodhan, the former Chief Executive Officer of Sonali Bank (UK) Limited (SBUK) in FCA proceedings before the Upper Tri...
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Jason Mansell is currently acting for a financial services company in respect of a large multi-jurisdictional DoJ/FCA investigation concerning market manipulation by traders through allegedly fictitious trading. The criminal charges have been discontinued...
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Jason Mansell acted for a senior banker in connection with a dual track insider dealing/market abuse investigation relating to the alleged dissemination of price sensitive information.
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Jason Mansell was instructed to advise a large and renowned UK company in connection with an internal investigation into allegation of overseas bribery and POCA exposures.Counsel was instructed by Read more
Acted for the defendant company in connection with the SFO’s prosecution for alleged price fixing in the pharmaceutical industry.
Acted for the FD of ISOFT PLC in relation to the FCA’s criminal prosecution for misleading investors.
Advising a trader and rate submitter in connection with the SFO’s investigation of LIBOR.
News
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Chambers and Partners released their rankings for Financial Crime: High Net Worth Individuals and QEB Hollis Whiteman and its members are acknowledged as leaders in the field.Chambers is ranked as Band 1 and nine members of Chambers are ranked as leader...
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Jason Mansell and Rhys Meggy instructed by Jill Lorimer and Anna Holmes at Kingsley Napley LLP acted for a cryptocurrency firm at an oral hearing before the FCA’s Regulatory Decisions Committee to determine whether the Firm met the statutory require...
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Chambers and Partners released their rankings for Financial Crime: High Net Worth Individuals today and QEB Hollis Whiteman and its members are acknowledged as leaders in the field.Chambers is ranked as Band 1 with sources describing us as "a set of chamb...
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Jason Mansell was instructed by Jill Lorimer of Kingsley Napley LLP to advise a claims management company in respect of its application for authorisation.When instructed initially the FCA had invited the firm to withdraw its application or enter into a vo...
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Jason Mansell and Tom Broomfield acted for a P2P lender whose application for authorisation had been refused by the FCA. The initial decision was successfully reversed.Following a contested hearing before the FCA’s Regulatory Decisions Committee th...
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Jason Mansell is currently advising Wellesley & Co Limited on a direct access basis in respect of FCA regulatory issues arising out of the CVA filed on 24 September 2020 by Wellesley Finance Plc.
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Jason Mansell acted for a director of a FCA regulated company in a cross border insider dealing investigation involving the FCA and the French Financial Regulator , the Autorité des Marchés Financiers (“AMF”).Following an interview under cauti...
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Jason Mansell acted for a claims management company that had been issued with a Warning Notice refusing its authorisation. Had the FCA’s action been successful, hundreds of the Firm’s employees would have been made redundant. Following a conte...
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Chambers & Partners’ High Net Worth publication ranks the top lawyers and law firms for international private wealth.Its 2019 edition launched on Thursday 11th June and marks the first time that Chambers HNW has featured barristers who specialise in...
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Mr Prodhan has referred a Decision Notice issued by the FCA to the Upper Tribunal.
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Joint event hosted on 2nd October at the Radisson Blu Hotel, Jersey.
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Jason Mansell acted for a senior employee of a PLC who on multiple occasions and in breach of internal policy traded in his employers' securities at times when the FCA suspected he might have been in possession of price sensitive information., After a ...
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William Boyce QC and Jason Mansell acted for Guillaume Adolph in respect of the FCA’s investigation as to whether he had been knowingly concerned in a breach by Deutsche Bank of Principle 5 (market conduct).
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Jason Mansell, barrister at QEB Hollis Whiteman, commented on the conviction of trader Mark Lyttleton for two counts of insider dealing in a prosecution brought by the FCA. Lyttleton will be sentenced on 21st December.Read the Bloomberg case report and co...
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Jason Mansell comments on Operation Tabernula verdicts. http://www.bloomberg.com/news/articles/2016-05-09/ex-deutsche-bank-broker-among-two-guilty-in-insider-trading-case
Articles
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Jason Mansell is a barrister specialising in FCA litigation. He has advised firms and individuals in relation to more than 100 FCA enforcement investigations and associated proceedings in the RDC, Upper Tribunal and High Court. In this article Jason revi...
-
A Briefing Note by Jason Mansell and Kathryn Hughes.In a long-awaited judgment, the Supreme Court has unanimously rejected the Serious Fraud Office’s (“SFO”) claim that its powers under s.2(3) of the Criminal Justice Act 1987 (“CJA...
-
Part 2 of a special two part analysis by Nicholas Griffin QC, Jason Mansell, Tom Broomfield and Rhys Meggy.
-
Part 1 of a special two part analysis by Nicholas Griffin QC, Jason Mansell, Tom Broomfield and Rhys Meggy.
-
Reproduced with kind permission of Lexis Nexis
Regulatory
A formidable strategist and advocate, his knowledge of financial regulation is truly unrivalled; he should be everyone’s first port of call in this field.
Overview
Jason has advised firms and individuals in relation to more than 100 FCA (formerly FSA) enforcement investigations and associated proceedings in the RDC, Upper Tribunal and High Court. He has also acted both for and against the Financial Reporting Council (formerly the AADB) in respect of disciplinary proceedings brought by the accountancy regulator. Many of his instructions result in no public outcome, preserving confidentiality. He is truly a leader of this field.
Experience
Jason is instructed on behalf of firms and individuals in relation to FCA investigations concerning alleged breaches of FCA Rules and Principles and for market abuse. He has acted for a number of firms in relation to FCA supervisory interventions through the use of the OIVOP procedure and for a number of alternative investment companies and their Directors in connection with High Court proceedings for alleged breaches of the regulatory perimeter.
Other instructions include acting for a PLC in relation to a listing rules inquiry, former senior employees of banks in relation to the FCA’s investigation of Libor, a former CEO of a large financial institution in respect of prohibition proceedings, various individuals in relation to allegations of market abuse and an insurance company in connection with allegations of mis-selling.
Jason has also acted for individuals in relation to applications for FCA approval and advises individuals and corporates on regulatory reporting, perimeter, authorisation and supervision issues.
Jason draws on his previous experience as a regulator, prosecutor and senior lawyer at Allen & Overy LLP to deploy the strategy and tactics necessary to achieve the best possible results. There is no stone he has left unturned in the field of financial regulation. He is calm, self-assured and a passionately robust advocate, always doing everything he can to secure the best outcome for the client. His experience in both the criminal and regulatory spheres mean that he is prepared for everything.
Jason is experienced in other fields of regulation beyond the financial sphere. He has advised a wide range of professionals as they have faced the scrutiny of their respective regulator. These have included lawyers, accountants, and surveyors. He has experience of a range of issues each have faced in the regulation of their profession, including issues arising from GDPR.
Notable Cases
FCA v Capital Alternatives & Or's [2015] EWCA Civ 284
Advised a Firm in connection with FCA civil proceedings for breaching the regulatory perimeter and misleading statements.FCA v Z (2015)
Jason Mansell acted for a individual being disciplined by the FCA for market abuse.FRC v Z (2015)
Jason Mansell acted for a FD of a PLC in connection with FRC disciplinary investigation.FCA v Koutsogiannis (2015)
Jason Mansell advised a trader and manager rate in connection with the FCA’s regulatory investigation of LIBOR. Proceedings discontinued by order of the RDC.RE: C (2013)
Advised an Iranian citizen resident in the UK who was being "cold shouldered" by financial institutions as a result of sanctions.FCA v X PLC (2013)
Acted for PLC in connection with alleged breaches of Listing Rules – no action taken.Reviews
Chambers UK 2023: Financial Services – Band 2
Legal 500 2023: Business and Regulatory Crime (Including Global Investigations) – Tier 2; Financial Services Regulation– Tier 1
‘He has an almost unrivalled expertise in contested FCA matters combining great knowledge with a strong sense of tactics.’ Legal 500 Financial Services Regulation (2023)
'He is creative, thoughtful and super responsive. A very effective advocate on his feet.' Chambers UK Financial Services (2022)
'He has an encyclopaedic knowledge of FCA rules and regulations. An excellent street-fighting defence counsel.' Legal 500 Financial Services (2022)
'He is a clever, versatile, no-nonsense barrister who adds real value in matters. Happy taking the lead or stepping in and out of a matter, bringing superb insight and strategic vision.' Legal 500 Business and Regulatory Crime (2022)
'A real expert at contentious FCA litigation. He has a lot of gravitas.' 'An outstanding junior with long experience on both sides of the fence as a regulatory lawyer in the FCA and on the defence-side.' Chambers UK Financial Services (2021)
'He has a deep understanding of the law in this area and combines intelligence with commercial savvy.' Legal 500 Business and Regulatory Crime (2021)
‘First on the list to defend FCA investigations and proceedings, he is a man of great experience.’ ‘He's practical, responsive, clever and someone who really helps with the tactical application of a case.’ Chambers UK Financial Crime (2020)
‘He is very good on his feet and has a nice court manner – he gets complicated matters across in a straightforward way that judges find easy to deal with.’ ‘A user-friendly and very responsive barrister.’ Chambers UK Financial Services (2020)
‘He has great insight and pitch-perfect instincts.’ Legal 500 Crime Business and Regulatory Crime (Including Global Investigations)(2020)
‘Fantastic and knows the FCA inside out in terms of processes.’ ‘He's very clever and exactly the person you want in your corner in a very technical City case.’ ‘He is fantastic with clients and has huge gravitas.’ ‘He sees the big picture of a case very quickly and doesn't just focus on the detail.’ Chambers UK Financial Crime (2019)
‘He is fantastic with clients and has huge gravitas.’ ‘He sees the big picture of a case very quickly and doesn't just focus on the detail.’ Chambers UK Financial Services (2019)
‘A very well-regarded junior with unrivalled experience of both sides of the FCA fence.’ Legal 500 Business & Regulatory Crime (2018)
‘Excellent to have defence side on criminal regulatory matters.’ Legal 500 Financial Services (2018)
‘His knowledge and experience help him make a real difference for his clients.’ Legal 500 Fraud: Crime (2018)
‘He absolutely knows the law like the back of his hand and is excellent tactically. He is really good on financial crime because he is a top specialist on the FCA side.’ Chambers UK (2018)
‘Provides sensible practical advice and is well suited to dealing with complex cases.’ Chambers UK (2018)
‘Having him on board is fantastic as he knows how the FCA think; he is not a pushover in any way and has taken cases against them all the way.’ Chambers UK (2017)
‘Extremely hard-working, and has fantastic judgement and great client care.’ Chambers UK (2017)
‘Excellent in cases where the financial and the regulatory cross over.’ Legal 500 (2017)
‘A good barrister with a civil/criminal crossover practice.’ Legal 500 (2017)
‘He’s always helpful, always available and always responsive. Added to this, he knows the approach the FCA will take.’ Chambers UK (2015)
‘He brings a background as a regulator, prosecutor and solicitor to the table.’ Legal 500 (2015)
Recent Cases
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Jason Mansell represented David Boardman who had initially been charged by the Pension Regulator with 6 counts of making prohibited investments, in his capacity as a trustee of a company pension scheme. Mr Boardman denied the allegations and followin...
-
Jason Mansell and Kathryn Hughes (instructed by Greg Brandman at Eversheds Sutherland International LLP) acted for Mohammad Ataur Rahman Prodhan, the former Chief Executive Officer of Sonali Bank (UK) Limited (SBUK) in FCA proceedings before the Upper Tri...
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Jason acted for the former finance director of a UK insurance company, facing an integrity inquiry relating to the alleged misuse and attempted acquisition of company assets. The client denied any wrongdoing and following a three and a half year investiga...
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Advised a trader in connection with the FCA’s regulatory investigation of LIBOR.
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Jason Mansell was instructed to advise a trader in connection with the FCA's investigation of Libor.
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Defending a CEO of a regulated firm before the RDC for alleged oversight failings in relation to AML issues.
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Successful application before the RDC for revocation of a prohibition order.
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Advised a Firm in connection wth a FCA regulatory investigation concerning the sale of insurance products.
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Advised in connection with cold-shouldering proceedings brought by the Takeover Panel.
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Advising the former FD of RSM Tenon PLC in connection with disciplinary allegations made by the FRC.
News
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Jason Mansell and Rhys Meggy instructed by Jill Lorimer and Anna Holmes at Kingsley Napley LLP acted for a cryptocurrency firm at an oral hearing before the FCA’s Regulatory Decisions Committee to determine whether the Firm met the statutory require...
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Jason Mansell was instructed by Jill Lorimer of Kingsley Napley LLP to advise a claims management company in respect of its application for authorisation.When instructed initially the FCA had invited the firm to withdraw its application or enter into a vo...
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Jason Mansell and Tom Broomfield acted for a P2P lender whose application for authorisation had been refused by the FCA. The initial decision was successfully reversed.Following a contested hearing before the FCA’s Regulatory Decisions Committee th...
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Jason Mansell is currently advising Wellesley & Co Limited on a direct access basis in respect of FCA regulatory issues arising out of the CVA filed on 24 September 2020 by Wellesley Finance Plc.
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Jason Mansell acted for a director of a FCA regulated company in a cross border insider dealing investigation involving the FCA and the French Financial Regulator , the Autorité des Marchés Financiers (“AMF”).Following an interview under cauti...
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Jason Mansell acted for a claims management company that had been issued with a Warning Notice refusing its authorisation. Had the FCA’s action been successful, hundreds of the Firm’s employees would have been made redundant. Following a conte...
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Jason Mansell acted for a senior employee of a PLC who on multiple occasions and in breach of internal policy traded in his employers' securities at times when the FCA suspected he might have been in possession of price sensitive information., After a ...
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Jason Mansell and Rachna Gokani acted for former RBS trader Neil Danziger in connection with contested regulatory proceedings before the RDC arising out of the FCA’s investigation of LIBOR. Jason and Rachna were instructed by Ben Rose and Charles Ku...
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Matter concerned a bank employee who was alleged to have passed price sensitive information.
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Following a contested hearing, the FCA's own Regulatory Decisions Committee has directed that no action should be taken against a CEO of a former regulated firm in connection with allegations concerning the alleged appropriation of client monies. Jason w...
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As reported in the Telegraph and other newspapers, the FCA's own Regulatory Decisions Committee has directed that no action should be taken against a former senior trader at UBS accused of alleged LIBOR manipulation. Jason Mansell was instructed b...
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Jason Mansell acted on behalf of the Moorhouse Group Limited (Andrew Katzen at Hickman Rose instructing) in relation to the FCA's investigation concerning the sale of add on products to new commercial customers during 2012. Instructed from the outset a...
Articles
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Jason Mansell is a barrister specialising in FCA litigation. He has advised firms and individuals in relation to more than 100 FCA enforcement investigations and associated proceedings in the RDC, Upper Tribunal and High Court. In this article Jason revi...
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Part 2 of a special two part analysis by Nicholas Griffin QC, Jason Mansell, Tom Broomfield and Rhys Meggy.
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Part 1 of a special two part analysis by Nicholas Griffin QC, Jason Mansell, Tom Broomfield and Rhys Meggy.
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