23ES

Mark O'Connor joined Chambers in 2024 following the completion of his 12-month pupillage. Mark is instructed to defend and prosecute in a full range of criminal matters across the Magistrates' Court, Youth Court, and Crown Court. This includes cases of drug supply, weapons, violence, public order act offences, and dishonesty offences. Mark also accepts instructions in quasi-criminal civil preventative orders, such as Sexual Harm Prevention Orders and Stalking Protection Orders.

Before coming to the Bar, Mark worked within a London-based law firm, where he assisted the litigation team with both case preparation and court advocacy. During this period, he was awarded the Gray’s Inn Lee Essay Prize for his essay on sentencing provisions for youths convicted of murder, and represented the Inn at the Monroe E. Price Moot Court Competition.

Mark has a background in Music, with First Class Honours from King's College London and a Master’s in Music from St. Catherine’s College, Oxford. He has also performed professionally as a jazz pianist.