Marianne Nankervis

Private Wealth Disputes

Court of Protection

Marianne Nankervis is a highly experienced private client solicitor specialising in complex probate, trust and estate disputes. She advises executors, trustees, beneficiaries, charities and private individuals on a broad range of contentious private client matters, combining technical expertise with a pragmatic and compassionate approach to resolving sensitive family and wealth disputes.

Marianne specialises in:

Contentious probate and estate administration disputes

Claims under the Inheritance (Provision for Family and Dependants) Act 1975

Will validity disputes, including lack of capacity, undue influence, fraud and forgery

Executor and trustee disputes, including removal applications and breach of duty claims

Trust disputes and applications concerning the administration of trusts

Estate administration and beneficiary disputes

Proprietary estoppel claims

Court of Protection disputes relating to property and financial affairs

Professional negligence claims arising from wills, trusts and estate administration

Mediation and alternative dispute resolution

Marianne acts for clients across England and Wales in high-value and legally complex private client disputes. She is recognised for her ability to navigate technically challenging cases with sensitivity and clarity, often where family relationships have broken down or significant personal wealth is at stake. Her practice encompasses disputes involving multi-generational estates, family trusts and contested wills, together with claims concerning the conduct of executors and trustees.

She has considerable experience of resolving disputes through mediation and negotiated settlement while also representing clients in High Court litigation where court proceedings are necessary. Clients and professional referrers value her calm, measured judgement, meticulous preparation and ability to achieve commercially and personally effective outcomes in some of the most emotionally sensitive areas of private client law.

Marianne Nankervis is a senior private client litigator with extensive experience advising on complex contentious probate, trust and estate disputes. She has built her career acting for executors, trustees, beneficiaries, charities and private individuals in high-value and emotionally sensitive disputes, developing a reputation for combining technical excellence with sound commercial judgement and a pragmatic approach to dispute resolution.

Throughout her career, Marianne has specialised exclusively in contentious private client work, advising on a broad range of matters including Inheritance (Provision for Family and Dependants) Act 1975 claims, will validity challenges, disputes involving executors and trustees, trust litigation, proprietary estoppel claims and Court of Protection matters. She has acted in numerous complex cases involving substantial estates, family businesses and multi-generational wealth, regularly working alongside leading King's Counsel and other specialist advisers.

Marianne has considerable experience of resolving disputes through mediation and other forms of alternative dispute resolution, whilst also representing clients in High Court litigation where necessary. She is recognised for her calm and empathetic approach, meticulous preparation and ability to guide clients through difficult disputes with clarity and confidence.

As a senior member of Roskilly & Co, Marianne plays an integral role in the firm's nationally recognised contentious private client practice, mentoring junior lawyers and contributing to the firm's reputation for delivering specialist advice of the highest quality.

Member of the Association of Contentious Trusts and Probate Specialists (ACTAPS)