Practice is predominantly personal injury/occupational disease and regulatory work. Founder member of Crown Office Chambers, and part of the team that was awarded Chambers and Partners Personal Injury Set of the Year in 2008. Regularly instructed on large loss claims by insurers such as AXA, Aviva (including by Environmental Claims Unit) and Zurich (including the Catastrophic Injury Panel). Previously pupil master, and advocate trainer at Lincoln's Inn. Has given evidence to foreign courts as an expert on English personal injury law. Editor of Current Law 1990 onwards.
William lives in London and Cardiff.