Sophie O’Sullivan is a specialist in business crime and professional regulation. Her core practice areas are: sanctions; business crime; commercial fraud; asset forfeiture; financial regulation and compliance; professional discipline; and health and safety.
Sophie is ranked as a Leading Junior in four practice areas by the Legal 500: (1) Business and Regulatory Crime (Including Global Investigations); (2) Fraud; (3) POCA and Asset Forfeiture; (4) Professional Discipline and Regulatory Law.
She is appointed to the Attorney General’s Panel of Junior Counsel to the Crown and the SFO’s International POCA panel. Sophie is a contributor to the 3rd edition of Lissack and Horlick on Bribery (LexisNexis), the leading work on bribery and corruption offences.
Recent or extant work includes:
Sophie is an experienced litigator and court advocate, having appeared in significant jury trials concerning, inter alia, corporate bribery and corruption, money laundering and banking, insurance and mortgage frauds. She is often engaged to advise on matters pre-charge in addition to her court practice, acting on behalf of prosecuting authorities (SFO, FCA, NCA, TPR, MCA) and defendants in the crown and appellate courts.
Internationally, Sophie has acted in proceedings brought against civil servants by international organisations including the International Monetary Fund (IMF), International Fund for Agricultural Development (IFAD), UN Assistance Mission in Somalia (UNSOM) and the African Union Commission (AUC).
In domestic regulatory proceedings, Sophie appears regularly before the GMC, GDC, SRA, NMC, GPhC and HCPC, often defending individuals against the most serious allegations of professional misconduct and negligent care as well as acting for both prosecuting authorities and defendants in health and safety proceeding.
In 2023, Sophie, with Alex Haines, acted for the Claimant in the first s.38 SAMLA challenge to a UK sanctions designation in the Administrative Court (Synesis v Secretary of State for FCDA  EWHC 541 (Admin)). As a member of the UK Attorney General’s Panel, Sophie is regularly instructed by OFSI, HM Treasury and the FCDO to advise on sanctions matters.
Sophie advises companies and individuals on all aspects of sanctions law across all regimes, particularly those affecting financial transactions and trade between the US, UK, EU, Russia and Iran.
She acts for and advises clients on sectoral sanctions risks relating to prospective commercial transactions, the interaction between UN Security Council resolutions and EU and US law, the EU Blocking Regulation, US secondary sanctions regime, the scope and effect of the Iran nuclear deal (JCPOA) and the post-Brexit statutory framework of the UK sanctions regimes. She also advises on reporting obligations to the UK’s Office of Financial Sanctions Implementation (OFSI), as well as US, EU and UK delisting applications and civil or criminal penalties arising from sanctions breaches.
Sophie acts for companies and company officers regarding allegations of fraud, money laundering, bribery and corruption, tax evasion, insider dealing and sharp practices. She conducts contentious work, appearing in crown and appellate courts, in addition to her advisory practice, providing opinions on legal issues including financial sanctions regimes, market manipulation and sharp practices, financial regulation proceedings and pre-charge advice.
She has particular experience in proceedings arising out of the Proceeds of Crime Act 2002 (POCA), acting for company directors and individuals in asset forfeiture and confiscation proceedings.
She has acted in a number of high profile asset freezing and forfeiture matters, often with an international component involving allegations of institutional corruption and corporate bribery. Sophie is often instructed to advise corporates in the financial sector on prospective or actual regulatory breaches, particularly with reference to the UK’s Money Laundering Regulations and sanctions framework.
Given her experience in both commercial crime and civil regulation, Sophie is often instructed by specialist regulatory authorities to advise on the use and deployment of their statutory powers in a criminal and POCA context. Recently, Sophie has advised a series of UK regulators and prosecuting authorities in respect of the use of their powers to prosecute corporate entities and company officers for financial crime offences.
The Pensions Regulator v SS & Others (2023)
Acting for the trustee of a corporate pension fund in one of the first criminal proceedings brought by The Pensions Regulator for offences under s40(5) of The Pensions Act 1995 relating to employer related loans and investments.
Re: B (2022-3)
Advising a global investment fund on litigation risks relating to AML compliance issues arising from a corporate client charged in the US with significant corporate financial offences.
Re: M (2023)
Advising an international mining company on the financial offences and sanctions risks arising from prospective commercial contracts with entities which may expose the client to US, EU and UK sanctions breaches.
Operation Dynamite (2022-23)
Acting for the Maritime and Coastguard Agency in one of its most ambitious and wide-ranging investigations into corporate financial crime and serious regulatory offences.
SFO v Saghir Afzal (2020-23)
Instructed by the SFO in long-standing enforcement proceedings arising out of a £30 million confiscation order from convictions for major fraud and international money laundering offences.
AH v JJ (2023)
Acting for the Defendant in High Court civil contempt proceedings arising from alleged breaches of >£6m freezing injunctions, preservation orders and financial undertakings. Jones v Hamilton EWHC 1216 (Ch).
RE: E (2022)
Advising a European investment firm in respect of regulatory and criminal risks arising from a cross-border criminal investigation into one of its financial services providers.
Sophie has a strong professional discipline practice. In domestic proceedings, she has advised and acted for those in the financial services, legal and medical professions in respect of misconduct investigations and contentious proceedings. She is frequently instructed in proceedings involving serious allegations of misconduct, sexual assault, dishonesty as well as health matters before the GMC, GDC, GPhC, NMC, SRA and MPS.
Sophie’s complementary expertise in criminal and regulatory law has meant that when instructed to act in conduct allegations which involve criminal behaviour, she often also appears in the crown court.
In addition to her UK professional disciplinary practice, Sophie also has specialist expertise acting for civil servants in professional disciplinary proceedings brought before international administrative tribunals, also involving allegations of serious misconduct including professional impropriety, high-value fraud and corruption charges. She has acted in proceedings brought against civil servants by international organisations including the International Monetary Fund (IMF), International Fund for Agricultural Development (IFAD), UN Assistance Mission in Somalia (UNSOM) and the African Union Commission (AUC).
IMF v M (2023)
Acting for a senior IMF employee in disciplinary proceedings alleging serious misconduct.
S v IMF (2023)
Acting for an IMF employee in a complaint brought against the IMF arising from findings of bullying and harassment in the workplace.
AUC v A (2021 – 2023)
Acting for a senior AUC employee in disciplinary proceedings alleging serious misconduct.
IFAD v F (2022)
Acting for a senior IFAD employee in disciplinary proceedings alleging serious misconduct.
GMC v Dr E (2022)
Acting for an allergy specialist accused of wide-ranging lack of competence allegations and specific allegations of misconduct relating to a vulnerable adult.
GMC v Dr X (2022)
Acting for a gynaecology and fertility specialist in proceedings relating to an allegedly improper and sexually motivated internal examination of a patient.
GMC v Dr Y (2022)
Acting for a cosmetic surgeon in regulatory proceedings accusing serious misconduct arising from improper procedures and breach of patient trust.
GMC v AK (2021)
Acting on behalf of a cosmetic surgeon in relation to multiple allegations of serious misconduct relating to surgical procedures and practices.
Sophie has broad experience appearing in criminal proceedings concerning health and safety breaches as well as criminal allegations arising from conduct in the workplace.
Sophie acts for companies, company officers and individuals, as well as the prosecuting entities, in regard to allegations of systemic failings in safe practices, serious injury and death in the workplace, and criminal allegations of professional wrongdoing and ill-treatment. She is also instructed in coronial inquests and inquiries, often acting for government bodies as well as appearing on behalf of companies and company officers.
R (LFRS) v TK & Others (2023)
Acting for the corporate owner of a residential building for serious offences arising from fire safety failings.
Operation Dynamite (2022 – 23)
Acting for the Maritime and Coastguard Agency in one of its most ambitious and wide-ranging investigations into sustained health and safety and regulatory offences involving loss of life.
HSE v FF (2022)
Acting for textiles corporate in proceedings arising from an explosion and fire at work premises in which an employee suffered life-changing injuries.
Thames Water (2022)
Acting for Thames Water in a series of corporate prosecutions for Water Supply (Water Fittings) Regulations 1999 breaches.
Sophie O’Sullivan is regulated by the Bar Standards Board (BSB) and holds a current practising certificate. If you are not satisfied with the service provided, please click here.
"Commercial, pragmatic, able to see the bigger picture beyond her specialist expertise and very aware of how that fits into the client's overall strategy. Responsive, user-friendly, and very bright."
Business and Regulatory Crime, Legal 500 2023
"Sophie is bright and settled some very good paper work. A future star in this area of work."
POCA, Legal 500 2023
"She is an excellent junior. Reliable, hardworking and focused. She is a very good lawyer and extremely competent to handle any task in case preparation. She has an engaging, charming personality and ability to get on with everyone. Neither her advocacy nor her written work can be faulted. She is an impressive operator in all aspects of criminal law."
Financial: Crime, Legal 500 2021
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