White Collar Defense & Government Investigations


Kitty St Aubyn is an associate barrister in the White Collar Defense & Government Investigation Group in Brown Rudnick’s London office.  

Kitty is experienced in representing clients involved in complex commercial criminal matters, involving the SFO, HMRC and other authorities. She has been practicing criminal law as a barrister since 2012 and has regularly appeared alone on behalf of both the defence and Crown in all criminal courts in trials, confiscation, restraint and ancillary proceedings. She has experience litigating sensitive issues relating to mental ill health and fitness to plead and representing youths in criminal courts.  

In addition to her criminal law practice, Kitty appears in inquests on behalf of families, the police and interested commercial entities, in Licensing Act 2003 proceedings on behalf of both operators of licensed premises and interested authorities, and has experience representing and advising the Commissioner for the Metropolitan Police on a range of matters.


R v Guraj [2017] 1 W.L.R. 22: Defending appeal by the prosecution in confiscation proceedings in the Supreme Court. Appeared alone in the Court of Appeal.

R v M and others (2016): First junior acting for a trader accused of manipulation of the LIBOR rate

R v B (2015): Represented a defendant on life licence charged with burglary and blackmail

R v C (2014): Represented the former editor of a national newspaper accused of phone hacking

Ahmed v Revenue and Customs, [2013] EWHC (Admin): Represented a company director in cash forfeiture proceedings in the High Court, successfully arguing disproportionality under the European Convention on Human Rights

R v A (2012): Represented a company director accused of defrauding the public revenue in a trial of the facts after a contested finding of unfitness to plead


BPP Law School, Bar Vocational Course, 2010
City University, Graduate Diploma in Law, Commendation, 2009
Middle Temple Queen Mother Scholar 2008-2010
Gonville and Caius College, University of Cambridge – B.A., 2005

Bar Admissions

England & Wales