• A notable junior with a flair of advocacy, Oliver Mosley is a capable barrister with a keen tactical mind.


    Oliver is regularly instructed to defend and prosecute in the Crown, Magistrates' and Youth Courts and is experienced in working with vulnerable witnesses and clients with complex needs. He has been commended by solicitors for his sound judgement and client care. 

    As a Grade 2 advocate for the CPS, Oliver has prosecuted numerous multi-handed trials as well as robbery, ABH and drug offences. He is keen to expand his practice in violent crime and sexual offences.

    As a pupil, Oliver supported senior members of chambers on various high-profile prosecutions, including that of Michael Seed, the final individual involved in the Hatton Garden burglary.

    Corporate & Financial Crime

    Oliver is currently jointly co-ordinating a team of barristers reviewing over 900 historical prosecutions conducted by the Post Office Ltd, on behalf of Peters & Peters. This followed a recent decision by the Criminal Cases Review Commission to refer the convictions of 47 sub-postmasters for appeal.

    Oliver spent much of his pupillage assisting Ed Brown QC and Philip Stott with the Serious Fraud Office prosecution of former Barclays Bank executives, during both the trial and subsequent re-trial. This included conducting in-depth research into corporate criminal liability in light of the case's developments, and the major implications it presented for the identification principle.

    Beyond the Barclays case, Oliver researched issues ranging from the bribery of foreign public officials to the asserting of corporate privilege against self-incrimination.

    Oliver has been appointed to the Serious Fraud Office list (Panel C). He is keen to develop his practical in corporate and financial crime. 


    Oliver is a registered case presenter with the Nursing & Midwifery Council and has acted for them in front of the interim orders panel and restoration panel.

    He has also assisted other members of chambers in their dealings with other regulators including the General Medical Council, the General Dental Council and the Gambling Commission. Oliver's research has covered areas such as entrapment and the lawfulness of test purchasing, and the differing disclosure obligations within the regulatory sector.

    Notable Cases

    R v Seed (Michael)

    R v Varley, Jenkins, Kalaris and Boath


    • CPS - External Advocates Panel (Grade 2)
    •  Serious Fraud Office - Counsel Panel C
    • Government Legal Department 'Junior Junior' Scheme – Member
    • Nursing and Midwifery Council – Authorised Case Presenter
    • Youth Court – registered advocate; YJLC trained

    Professional Memberships

    • The Criminal Bar Association
    • The Young Fraud Lawyers Association
    • The Human Rights Lawyers Association
    • The Honourable Society of the Middle Temple
    • FreeBar


    • Bar Professional Training Course & Master of Laws - City Law School, University of London (2017 – 2018)
    • Diplock Scholar - The Honourable Society of the Middle Temple (2017 – 2018)
    • Graduate Diploma in Law - City Law School, University of London (2016 – 2017)
    • BA (Hons.) Human, Social and Political Science - University of Cambridge (2013 – 2016)


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