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Marc Thorley

Marc Thorley

Partner

London

T: +44 (0) 20 3400 4906

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Biography

Marc brings a wealth of experience in complex litigation, investigations, and regulatory matters.

He has a strong focus on the financial services sector, representing a diverse range of financial institutions, including banks (investment, retail, and commercial) and buy-side businesses.  Marc also has deep experience of corporate and commercial litigation, and of the Asian region having been Asia Head of Litigation for another global law firm.  He also has experience of the internal dynamics of international financial institutions, having done two secondments to Barclays Bank.

Marc is described in directories as “outstanding”, “praised for a wealth of experience in retail and wholesale banking litigation”, and as “extremely impressive.  He has exceptionally good tactical sense and can see the best points immediately.  He is also charming and wonderful with clients.  A real star.”

Marc’s experience of corporate litigation includes M&A disputes, breach of warranty claims, directors’ duties issues, completion account disputes, shareholder disputes and earn out entitlement disputes.

Emerging Themes in Financial Regulation & Disputes

We anticipate a pivotal year for investigations and enforcement

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Admissions

  • England and Wales

Related Capabilities

Business & Commercial Disputes Business & Commercial Disputes

Intellectual Property & Technology Disputes Intellectual Property & Technology Disputes

Litigation & Dispute Resolution Litigation & Dispute Resolution

Regulation, Compliance & Advisory Regulation, Compliance & Advisory

Class Actions & Mass Torts Class Actions & Mass Torts

Financial Institutions Financial Institutions

  • Business & Commercial Disputes

  • Intellectual Property & Technology Disputes

  • Litigation & Dispute Resolution

  • Regulation, Compliance & Advisory

  • Class Actions & Mass Torts

  • Financial Institutions

Experience

Examples of Marc’s recent work for financial institutions include:

  • Defending a $6bn fraud claim against an international bank, in the Abu Dhabi Global Markets and London courts.
  • Acting for an international investment bank in litigation involving complex autocall structured products.
  • Acting for a financial institution in complex sanctions-related litigation, and in a sanctions-related regulatory investigation.
  • Leading an investigation into the delta one/total return swap business of a leading Asian bank.
  • Leading a major and sensitive conduct investigation for a global financial institution.
  • Conducting an insider dealing investigation for a large international alternative investment firm.
  • Acting for an international financial institution in a dispute over the interpretation of ISDA master documentation in the context of lookalike swaps.
  • Advising a major financial institution on a significant retail mis-selling issue, including navigating complicated regulatory, complaints and redress aspects.

Related Insights

Insights
Jan 26, 2026

UK Financial Ombudsman Service Reforms: Key Changes and Impacts

In July 2025, HM Treasury (“HMT”) published a consultation paper (the “HMT Consultation Paper”) outlining significant reforms to the Financial Ombudsman Service (“FOS”). At the same time, the Financial Conduct Authority (“FCA”) and FOS published a consultation paper (the “FCA/FOS Consultation Paper”) designed to be read alongside HMT’s proposals whilst setting out their own proposals for reform. BCLP responded to both consultations last year, and further developments are now expected in 2026, with the FCA confirming plans to issue a Policy Statement in the first half of the year.   From its origins as an informal financial services dispute resolution mechanism, the FOS has evolved into an entity that many now view as problematic. The Chancellor, in her 2025 Mansion House speech, described its reform as the biggest of all of the proposed reforms launched. According to HMT, industry stakeholders believe the current FOS has been “impacting investment in UK financial services and inhibiting innovation by firms”. Getting this reform right is therefore crucial to the Government’s growth agenda.   In this article, we consider some of the key aspects of the proposed changes and highlight some significant issues that must be considered before the proposals are implemented. 
Insights
Jan 30, 2025

Modernising the redress system

Related Insights

Insights
Jan 26, 2026
UK Financial Ombudsman Service Reforms: Key Changes and Impacts
In July 2025, HM Treasury (“HMT”) published a consultation paper (the “HMT Consultation Paper”) outlining significant reforms to the Financial Ombudsman Service (“FOS”). At the same time, the Financial Conduct Authority (“FCA”) and FOS published a consultation paper (the “FCA/FOS Consultation Paper”) designed to be read alongside HMT’s proposals whilst setting out their own proposals for reform. BCLP responded to both consultations last year, and further developments are now expected in 2026, with the FCA confirming plans to issue a Policy Statement in the first half of the year.   From its origins as an informal financial services dispute resolution mechanism, the FOS has evolved into an entity that many now view as problematic. The Chancellor, in her 2025 Mansion House speech, described its reform as the biggest of all of the proposed reforms launched. According to HMT, industry stakeholders believe the current FOS has been “impacting investment in UK financial services and inhibiting innovation by firms”. Getting this reform right is therefore crucial to the Government’s growth agenda.   In this article, we consider some of the key aspects of the proposed changes and highlight some significant issues that must be considered before the proposals are implemented. 
Insights
Jan 30, 2025
Modernising the redress system