David O'Sullivan has over 15 years of experience as a criminal barristers' clerk.


David joined Chambers in 2014 and has overall responsibility for the management of the diary and the development and maintenance of client relationships.


David joined QEB Hollis Whiteman in January 2014, having gained 10 years experience within 2 other criminal sets of chambers.

David is a keen sportsman and likes to keep fit by playing a number of sports including golf, squash and football. David is a passionate Chelsea supporter and enjoys attending games when he can. He also likes to visit different countries and places when holidaying with family and friends.


'Senior clerk Chris Emmings and second junior clerk David O'Sullivan are, quite frankly, masters of their craft. They understand how to meet expectations when dealing with these cases.' Chambers UK 2021

'I would single out David O'Sullivan for particular praise. He has an ability to quickly understand the issues in a case and to fully prepare counsel to jump into cases quickly and efficiently. He is just what you need in an urgent case.' Legal 500 2021

'David O'Sullivan is charismatic, proactive and never misses his mark when it comes to matching counsel to cases.' Legal 500 2021

‘The clerking is excellent, and senior clerks Chris Emmings and David O’Sullivan in particular are very good.’ Chambers UK (2020)

‘Second junior David O’Sullivan is ‘the junior clerk to watch’; ‘he is able to quickly grasp the issues of a case and secure the best possible counsel, even at short notice.’ Legal 500 (2020)

‘Second junior clerk David O’Sullivan is also recommended by solicitors for his ‘efficiency and responsiveness.’ Legal 500 (2019)

‘Second junior clerk David O’Sullivan is also ‘excellent at client care and widely held in very high regard.’ Legal 500 (2017)

‘Faye Patis and David O’Sullivan, who are ‘extremely efficient and a pleasure to work with.’ Legal 500 (2016)