William Willson > South Square > London, England > Lawyer Profile

South Square
South Square


William specialises in domestic and cross-border insolvency, banking and finance, commercial litigation and company law.

As well as acting, appearing and advising in relation to all aspects of Chambers’ core insolvency/restructuring practice (including schemes of arrangement) William also has a varied commercial practice, including recent experience of civil fraud, professional negligence, shipping, insurance and real property litigation. Many of his cases have an international element, and he has a particular interest in cases involving Russia/the CIS/the Middle East.

In recent years William has appeared in several high profile trials, both at home and abroad, including the $2 billion claim by the Primeo fund against HSBC in the Cayman Islands (fund litigation), and McKillen v Sir Frederick Barclay (unfair prejudice/conspiracy). He has appeared as sole Counsel in the Court of Appeal, the Court of Appeal of the Cayman Islands and the Court of Appeal of the Eastern Caribbean Supreme Court.

He is currently instructed in a number of ongoing claims both as junior and sole Counsel in both the Commercial Court and the Chancery Division.

Before becoming a barrister William was a journalist/documentary producer, specialising in the former Soviet Union, terrorism and the intelligence services. His credits include the triple-BAFTA winning The Government Inspector.


Called 2006; called to the Bar of Gibraltar 2013; called to the Bar of the Cayman Islands 2014.


Chancery Bar Association, Commercial Bar Association, Insolvency Lawyers’ Association, INSOL International.


Oxford University (2000 MA Classics, First Class); City University (2005 CPE, Distinction); Inns Court School of Law (2006 BVC).

Lawyer Rankings

London Bar > Offshore

Within: Leading Juniors -

William Willson

South Square

A junior instructed in cases stemming from Russia.

London Bar > Insolvency

Within: Leading Juniors -

William Willson

South Square

Has a prodigious ability to produce high-quality work product which quickly which makes him a highly valued member of the team.