Sean Sullivan

Introduction

Sean is a calm and focused barrister who both prosecutes and defends allegations of serious crime –and has acted across a wide range of cases.

Background and expertise

In more than a decade of experience, Sean has handled serious allegations such as murder, rape, historic sexual abuse, drugs conspiracies and firearms offences.

He has experience of dealing with multi-defendant cases, and those involving heavy amounts of material and complex issues of law. He is also experienced in appeal work – having appeared for clients before the Supreme Court, Court of Appeal and Divisional Court.

Read more

He aims to manage cases proactively – giving strategic advice at an early stage. He is skilled in case preparation and both oral and written advocacy.

He is adept at winning the confidence of clients – and is known for his hard work and tenaciousness in court, even in the trickiest of cases.

Notable cases

R v T Smith, 2016

Charged with murder, Smith was the only one of five defendants to be acquitted after a five-week trial. Sean’s cross-examination of the prosecution’s cell site expert helped undermine the case. Earlier, in the divisional court, Sean had successfully challenged a decision to refuse bail.

R v Maudarbocus and Maudarbocus, 2016
Sean, prosecuting, secured convictions against a father and son who were key players in a group of international money launderers. The case involved substantial amounts of telephone data, financial information, and covert surveillance.

Read more Notable cases

R v Priestley and others, 2017
Sean represented three defendants accused of conspiring to supply cocaine. Sean ran legal arguments at an early stage that led to the prosecution dropping the allegation against two of the defendants; then further legal arguments at trial in relation to non-disclosure that led to the prosecution offering no evidence against the third.
Financial conduct/regulation project, 2015
Sean worked as part of a team of barristers, assisting a leading global bank with its regulatory obligations. He worked directly with bankers and executives to help them meet standards in relation to “know your client” and anti-money laundering requirements. During the project Sean worked from London, Geneva and Monte Carlo.
R v Cummings, 2016
At the Old Bailey, Sean defended a prison inmate accused of causing ‘GBH with intent’ to a fellow inmate. After a seven-day trial involving careful and effective cross-examination of the complainant, the defendant was acquitted.
Module Icon

PROFILE: Sean Sullivan

"His easy-going manner belies the quality of his advocacy, both oral and written."

Legal 500, 2017

Year called

2004

Specialisms

Module Icon

Crime

Module Icon

Confiscation / POCA

Module Icon

Cybercrime

Module Icon

Financial Crime

Module Icon

Fraud, Bribery & Corruption

Module Icon

Military

Module Icon

Road traffic

Module Icon

Sexual offences

Module Icon

Terrorism

Module Icon

Disciplinary

Module Icon

Regulatory / Disciplinary

Module Icon

Financial and Corporate law

Module Icon

VAT Tribunals

Contact

020 7489 2727

Education

BA in jurisprudence, University of Oxford (St Edmund Hall)

Appointments

CPS level 3 prosecutor

Accredited pupil supervisor

Accredited to accept direct public access instructions

Accredited to deal with vulnerable witnesses

Recognition

Recognition Icon
Download Profile