Thomson Reuters names eight Keystone Law partners in its Stand-out Lawyers Guide 2026
Andrea James, Andrew Darwin & Anna McKibbin
Mamuna is a London-based international private wealth and tax lawyer, representing high-net-worth and ultra-high-net worth families in the UK and globally. She has an established client base representing esteemed families throughout the Middle East, the Gulf States and beyond.
Mamuna’s expertise includes offering advice on succession planning, wealth preservation, asset protection, tax, cross-border estate administration and the acquisition of UK residential properties.
By regularly travelling to meet clients and contacts and hosting industry events, Mamuna has established close relationships with a range of UK and international experts. She works closely with embassies, wealth managers, tax advisors, family offices, property agents, brokers and private banks to offer international families a holistic, bespoke service.
Mamuna advises high-net-worth clients and families on UK property, succession, and estate planning, across complex international tax, legal, and succession frameworks.
Experience
Mamuna advises international clients and high-net-worth individuals on UK property transactions, providing guidance on SDLT, CGT, ATED, non-resident tax issues, and property structuring for both personal and corporate holdings.
Experience
Mamuna works with ultra-high-net-worth families, advising on probate and estate planning, property structuring, succession, and gifting strategies across multiple jurisdictions.
Experience
Please note: The experience list above may include examples of work completed prior to joining Keystone Law.
Recommended Tax Lawyer in The Spear’s 500 Tax Law Index 2023–2024
Included in The Muslim 100 Power List Parliamentary Review – Trailblazer 2018
Awarded the Power 100 Legal Excellence Award 2018
Awarded ‘Young Achiever of the Year’ at the inaugural British Muslim Awards 2013
Mamuna qualified as a solicitor in 2010. Prior to joining Keystone Law in 2022, she worked at the following firms: