William O’Brien

William O’Brien


Areas of Expertise

William qualified into the Litigation & Dispute Resolution department in October 2019 after having spent a year there as a trainee solicitor.

He acts for a wide variety of companies, charities and individuals in commercial and other litigation, including the firm’s historic criminal defence work. He has experience acting for high net worth individuals in contentious private client matters. He also assists James Dunn with interventions into solicitors firms carried out by the Solicitors Regulation Authority.


During his training, William sat in the firm’s property litigation and real estate departments during his training contract, giving him insight into these areas. He previously worked as a paralegal in local government, where he assisted on a variety of matters including commercial contracts, planning and commercial and residential real estate.


William contributed to the firm’s Autumn Budget briefing (December 2017) and regularly contributes to the department’s Litigation Brief.


William took an Upper-Second class degree in Laws (LLB Hons) at UCL before achieving a Distinction in his LLM in Legal Practice at the University of Law, Bloomsbury.


In his spare time, William is an enthusiastically casual runner. He has recently run the Ealing Half Marathon and the Royal Parks Half Marathon. Together with other colleagues, he has also run 5km in a Santa suit on two occasions.

He has been actively involved in the firm’s environmental efforts as part of its CSR programme and is the firm’s liaison with The Spitz Charitable Trust, one of the charities chosen to be supported by the Devonshires Foundation for the year 2018-19 and supported by staff fundraising.


William won the René Cassin Human Writes Essay Competition 2018 and was given an honourable mention for his entry into the UK Environmental Law Association’s annual essay competition, the Andrew Lees Essay Prize 2018.

He was awarded a Choose Law scholarship while studying for his LLM at the University of Law, Bloomsbury (2016-17), achieved the second highest grade in his Jurisprudence module on his undergraduate law degree at UCL (2012) and was awarded the Sixth Form Politics Prize at the Cardinal Vaughan Memorial School (2009).


“Absolutely brilliant. His assistance and quality of work has been first rate, and would be impressive if he had ten years experience behind him” – Junior Chancery barrister

Get in touch

020 7880 4269
London Office
Devonshires Solicitors LLP
30 Finsbury Circus

PA: Laura Barker
0207 065 1859

Notable Cases

• William recently assisted on an application for a vesting order of freehold land under the Companies Act 2006, which involved the interaction between company, insolvency and property law.


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