INDIVIDUAL PROFILE
Peter Gillis

Peter Gillis

High Net Worth 2026

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Ranked in 1 practice area

About

Provided by Stephenson Harwood LLP

High Net Worth

Practice Areas

Peter Gillis is a partner at Stephenson Harwood specialising in international contentious trust, probate and succession disputes, high value family disputes, and commercial trust disputes.

Peter acts for high-net-worth individuals from the UK and around the world, trustees, protectors, and multinational professional services businesses operating in in this area. Peter has significant experience litigating in both UK and international courts, including Jersey, Guernsey, the BVI, the Bahamas, Hong Kong and Mauritius.

Peter advises on a full range of matters affecting private clients and their structures including:

- applications to deal with mistaken advice or flawed decisions by way of rectification or revocation;

- breach of trust claims;

- fraud claims;

- disputes between family members regarding their interest in family trusts and the operation of underlying corporate entities;

- trustee directions and court approval/blessing applications;

- advice about and disputes involving loss of capacity by family members or fiduciaries;

- challenges to Wills.

Peter has particular expertise resolving difficult and long-running disputes between beneficiaries of both English and offshore family trusts owning large multinational businesses.

Peter also regularly acts for Trustees of 'commercial trusts' including security trustees on contentious issues arising from secured bonds, securitisations or structured finance transactions as well as trustees of Unit Trusts, EOTs, EBTs involved in disputes or where the underlying structures are financially distressed.

Chambers Review

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Chambers High Net Worth

Private Wealth Disputes - London (Firms)

Up-and-coming Individual
Up and Coming

Individual Editorial

Peter Gillis regularly handles significant international trust litigation proceedings. He was promoted to partner at Stephenson Harwood in 2025.

Strengths

Provided by Chambers

  • Peter is really clever; a really bright guy.

    Private Wealth DisputesChambers High Net Worth
  • Peter Gillis is very hard-working and analytical, but also personable.

    Private Wealth DisputesChambers High Net Worth
  • Peter is brilliant. He is meticulous in terms of attention to detail.

    Private Wealth DisputesChambers High Net Worth

Ranked Individuals at Stephenson Harwood LLP (22)

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London (Firms)

Singapore

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United Arab Emirates

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