Mahmood Lone


Mahmood is UK Head of Litigation and Investigations.

He has significant experience advising financial institutions on domestic and cross-border litigation and regulatory investigations. He advises clients on a wide range of banking and commercial disputes and is particularly known for his expertise in disputes arising from complex derivatives, bonds and structured products.

He also represents clients in internal and regulatory investigations on a broad range of issues, including market abuse/manipulation, competition, whistleblowing and non-financial misconduct.

Mahmood is one of few practitioners recognised by the legal directories for both banking litigation and contentious regulatory. Clients describe him as “excellent and incredibly hard-working” (Chambers UK 2022, Banking Litigation). He is a "brilliant litigator" and "careful, diligent and effective in ensuring optimum results for clients" (Legal 500 2022, Banking Litigation). "His advice is always perfectly pitched" (Chambers UK 2023, Banking Litigation).



Admitted as solicitor, England and Wales, 2004


LLB, Law, The University of Nottingham, 2000


A&O Shearman was formed on May 1, 2024 by the combination of Shearman & Sterling LLP and Allen & Overy LLP and their respective affiliates (the legacy firms). Any matters referred to above may include matters undertaken by one or more of the legacy firms rather than A&O Shearman.