Jonathan Speck

Chair

"The partner all others aspire to emulate"

Legal 500 UK

Overview

Overview

A Jersey Advocate and Partner, I specialise in commercial litigation, principally involving contentious and non-contentious trust cases. I’ve written and lectured about these topics around the world.

In 2017, I was elected as an Academician of the International Academy of Estate and Trust Law in recognition of my contribution to the profession.

As the Chair of Mourant Group, a role I assumed on 1 February 2025, I am responsible for Board effectiveness and engagement with shareholders and stakeholders. Previously, I served as the firm’s Senior Partner.

I’ve been a Partner since 1996 and previously served as Managing Partner of the Jersey Office and President of the Law Society of Jersey between 2014 and 2017.

“Jonathan Speck is the top of his field: his reputation both in Jersey and globally is virtually unrivalled.”

Chambers and Partners UK 2026

“Jonathan Speck is silky smooth.”

Legal 500 UK 2026

“Probably the best advocate at the Jersey Bar.”

Chambers and Partners High Net Worth 2025

“Jonathan Speck has stage presence like an actor in court. He is a star and he holds the court’s ear like very few others can.”

Chambers and Partners High Net Worth 2025

“Jonathan Speck is one of the ‘big beasts’ in the offshore litigation market. He brings huge amounts of experience and gravitas to any case.”

Legal 500 UK 2024

“An excellent lawyer with a great reputation in the market.”

Chambers and Partners High Net Worth 2024

“When Jonathan speaks, the court listens.”

Chambers and Partners High Net Worth 2023

“The partner all others aspire to emulate.”

Legal 500 UK 2023

“A top-level partner within the industry.”

Chambers and Partners UK 2023

“Clearly a leader in the field.”

Legal 500 UK 2022

“A galactic figure in the trust space.”

Chambers and Partners UK 2021

Memberships

Association of Contentious Trust and Probate Specialists

Society of Trust and Estate Practitioners (STEP)

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