Thom is an experienced barrister whose practice encompasses serious and complex crime, appeals, police law, and public law and human rights. He prides himself on combining expert legal knowledge with exceptional standards of oral and written advocacy and has an established track record of securing successful outcomes for his clients.

Thom is ranked in the current editions of Chambers & Partners and The Legal 500, and is described by his instructing solicitors as "an exceptionally talented young barrister" and "an excellent advocate whose personal approach to our clients is second to none".

He has expertise in a number of areas, including:

He is regularly instructed in sensitive and high-profile matters, with a particular focus on cases in which civil and criminal law overlap, or which involve multiple jurisdictions. In suitable cases, he accepts instructions from members of the public on a direct access basis.

He is a member of Deka Chambers in London, which is a leading national and international common law set, offering some of the finest advocates and best performing barristers across its practice areas. Comprising over 110 barristers, including 14 market leading silks, it is one of the biggest common law sets in the country.