Brian O'Neill QC provides advice and advocacy in private prosecutions (in which he has a particular expertise), business crime, and serious crime. His expert skills can be applied to any complex situation whether defending or prosecuting across various jurisdictions. He advises corporate clients in this jurisdiction and abroad and gives advice to foreign Governments. He has appeared in numerous high profile cases and has represented a number of professional footballers.

Brian is consistently recommended in the principal industry guides as a leader at the Criminal Bar with quotes such as:
“Highly attractive to corporates wishing to commence private prosecutions.” Legal 500
“His calm and confident manner means he is in great demand.” Legal 500
"He's very thorough…he's very organised, and he shows great attention to detail." Chambers UK
“A very strong practice...he is very level headed and very cool" Chambers UK

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