Aaron Le Marquer

Aaron leads the Policyholder Disputes team and specialises in representing policyholders in high-value and complex coverage disputes with insurers. He is recognised as a market-leading policyholder advocate and insurance coverage lawyer.

Aaron acts for clients in relation to coverage of insured losses in diverse sectors including financial services, hospitality and retail, manufacturing, logistics, sports and entertainment. He is experienced in all commercial lines of business, including business interruption, directors and officers, professional liability, cyber, environmental risks, property and casualty. Aaron spent eight years practising in the Asia Pacific region (Singapore, Hong Kong, Bangkok), and is particularly experienced at resolving international and cross-border claims, often via arbitration.

In recent times, Aaron has established himself as a leading policyholder advocate in the field of Covid-19 business interruption coverage, and in both 2022 and 2023 Aaron’s cases were selected by The Lawyer as the only insurance cases to feature in the publication’s annual Top 20 Cases list. In June 2023 he was named by The Times as Lawyer of the Week in recognition of the successful verdict in London International Exhibition Centre v RSA & Ors [2023] EWHC 1481 (Comm).

Aaron trained and practised with City and US firms in London before relocating to Asia in 2011, where he spent two years in-house as regional head of litigation for a global insurer in Singapore. He then returned to private practice to lead a dedicated insurance practice at Southeast Asia’s leading law firm, with offices in seven countries across the region.

After returning to London in 2019, Aaron led the products and environmental risks practice at a leading insurance boutique, before joining Stewarts to launch the firm’s Policyholder Disputes practice in 2022.

British Insurance Law Association

London Business Interruption Association

Law Society LGBTQ+ Solicitors Network

American Bar Association

Aaron has been widely published and interviewed on topical policyholder issues, most recently in relation to Covid-19 business interruption coverage, and as well as featuring regularly in the insurance industry press, has appeared in publications as diverse as the Financial Times, the Hollywood Reporter, the Sun, the Telegraph and the Times.

Having originally studied music at university, Aaron enjoys playing the piano when given an occasional break by his nine-year-old twins.