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Penningtons Manches Cooper

Work 01256 407100
Fax 01256 479425

Henrietta Mason

Work +44 (0)1256 407298
Penningtons Manches Cooper

Work Department

Contentious private client


Advises on contentious aspects of private client work for individuals and charities; trust and estate litigation both domestic and international, estate administration; conflicts of laws in cross border matters; negligence claims in relation to trust and succession; joint property ownership disputes.

'Whip-smart, direct and pulls no punches…she provides a fantastic service.' - The Legal 500 2017


Trained at Withers LLP 2001 and qualified 2003; Withers 2003 - end 2015; Penningtons Manches LLP 2016 to date; made partner 2018.


ACTAPS; Charity Law Association; member of Wills and Equity Committee of the Law Society; President of Private Client Commission of AIJA (International Association for Young Lawyers).


St Mary’s Calne, Wiltshire; Oxford University (St Anne’s College); BA English Language and Literature 2:1

London: Private client

Contentious trusts and probate

Within: Next generation lawyers

Henrietta Mason - Penningtons Manches Cooper

Within: Contentious trusts and probate

Penningtons Manches Cooper fields an ‘incredibly responsive and super personable team that is always looking for the most cost-effective way to achieve the best result’. Head of team Michael Cash  has an ‘excellent mix of experience, knowledge and practical common sense’. Newly promoted partner Henrietta Mason  ‘stays calm even in the face of the worst adversity and is technically excellent. She is a very effective lawyer who attracts good work and will surely flourish as a partner’. Senior associate Sarah Lee  ‘ works tirelessly and is a fearsome advocate’. In a case that showcases the team’s ability to deal with complex cross border and high value matters it continues to act for the administrator of the estate of his Exalted Highness the 7th Nizam of Hyderabad. The long running dispute is over £35m that is held by National Westminster Bank that was deposited in 1948. Claimants to the funds are the States of India and Pakistan and various heirs to the 7th Nizam.

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South East: Private client

Personal tax, trusts and probate: Hampshire

Within: Next generation lawyers

Henrietta Mason - Penningtons Manches Cooper

Within: Personal tax, trusts and probate: Hampshire

Penningtons Manches Cooper 's advice is 'highly rated' and its 'charges are reasonable for the quality of advice and service offered'. The team has extensive expertise in trusts law, including that with an international aspect, and contentious issues such as the removal of trustees and disputes between trustees and beneficiaries. Its private client and tax practice handles the full range of advisory and disputes matters, assisting high-net-worth families resolve conflicts, preserve wealth and plan succession. The team acts for a number of high-profile clients and highlights included acting for an American family in an international burial dispute as well as handling trust and estate issues. Practice head Michael Cash's 'knowledge is first rate and he has a calm reassuring manner about him'. Other noted team members include Henrietta Mason, Siân Hodgson and Sarah Lee.

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