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Mishcon de Reya LLP

Living Wage
Work 020 3321 7000
Fax 020 7404 5982
London, New York

Mark Keenan

Work 020 3321 7129
Mishcon de Reya LLP

Work Department

Contentious trusts and probate; charities and not-for-profit; private client.


Mark is a partner in Mishcon Private, specialising in complex inter-family domestic and international trust and succession disputes often involving asset-tracing and recovery in offshore jurisdictions.


He has significant experience in advising private individuals and trustees on cross-border inheritance disputes, Will disputes, Inheritance Act claims, estate administration issues, breach of trust and proprietary estoppel claims.


Mark is a recognised leader in his field. Chambers 2014 describes Mark Keenan as a "robust litigator" who dominates the contentious trusts and estate market, both in the UK and overseas. He receives praise for his technical expertise and client care skills: "I have total faith in him. He is caring and clever, which is a great combination."


Legal 500 rankings highlighted Mark as "an individual star: hugely interventionist in a good way, and an amazing tactician" with "an encyclopaedic knowledge of the relevant cases".


Mark is a member of the Association of Contentious Trust and Probate Specialists (ACTAPS), the Society of Trust and Estate Practitioners (STEP) and the International Fraud Group (IFG). The IFG is a global network of specialist fraud lawyers across 14 countries focused on securing injunctions, asset recovery and trust busting remedies in key offshore jurisdictions.


Partner, Mishcon de Reya LLP

Qualified, Mishcon de Reya


Westminster University: LLB (Hons)

London: Private client

Contentious trusts and probate

Within: Leading individuals

Mark Keenan - Mishcon de Reya LLP

Within: Contentious trusts and probate

The ‘highly ratedMark Keenan  leads the team at Mishcon de Reya LLP, which is ‘undoubtedly first-class and is remarkable for its tenacity and attention to detail’. Other members of the excellent team include Peter Steen, managing associate Jessica Medus  who is ‘very able’ and legal director Janet Tobin who is a ‘very good operator’. James Smith  is described as an ‘up-and-coming associate who is meticulous in his attention to detail’. Keenan is adept at handling complex domestic and international trust and succession disputes often acting for ultra-high-net-worth individuals in cases frequently involving freezing injunctions and asset recovery in offshore jurisdictions. Active clients include Lord Weymouth, The Dowager Countess of Bathurst, Signia Wealth Limited and Lo Kai Shui.

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