Robert O’Sullivan QC

1988 (QC 2012)

"fluent advocate in court; authoritative and very impressive. An outstanding all-rounder"

- Instructing Solicitor


Robert O’Sullivan is a specialist trial advocate in the prosecution and defence of serious and complex fraud cases. He advises on the law and case strategy pre-charge. He has considerable experience in direct and indirect tax fraud. He has prosecuted many multi-handed MTIC VAT frauds and recently successfully prosecuted an HMRC investigation into a £98 million marketed income tax avoidance scheme in the film industry.

He prosecutes and defends murder and manslaughter cases, including defending a baby-shaking fatality, and health and safety criminal litigation.

He is experienced in court-martial trials in the UK and overseas, having defended in the Camp Bread Basket prisoner abuse trial arising out of the second Iraq war; also medicines and medicinal products prosecutions (including advising the MHRA in the Seroxat investigation) and trading standards cases.

He is a member of the Serious Fraud Office Panel of Queen’s Counsel. As junior counsel he was on the Attorney-General’s A List of specialist advocates and a Grade 4 CPS prosecutor.

He is a member of the Bar Council’s Law Reform Committee, with a particular interest in IPA, RIPA, DRIPA and the associated Codes of Practice and the tension between state surveillance and legal professional privilege and confidential journalistic sources. He is involved in the Bar’s responses to consultations on, amongst other areas, strict liability tax reporting offences, official secrets and the new Sentencing Code.

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