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John Marrin KC

UK Bar 2026

 Keating Chambers

Ranked in 1 practice area

International Arbitration: Arbitrators

London (Bar)

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Chambers Review

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UK Bar

International Arbitration: Arbitrators - London (Bar)

Band 1
Individual Editorial

John Marrin KC is best known for his expertise in international construction cases, but also regularly sits as an arbitrator in disputes relating to construction, energy, PFI, rail and software projects. His experience is of a truly international character, as is evidenced by his participation in tribunals concerned with disputes in more than 34 jurisdictions. He regularly takes co-arbitrator and chair appointments.

Strengths

John is a very calm, measured and experienced barrister.

John Marrin is very thorough, hardworking and extremely diligent and on top of things at all times. It is quite extraordinary what he manages to achieve consistently.

John has an extraordinary ability to grip huge amounts of detail.

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Ranked Barristers at Keating Chambers (112)

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London (Bar)

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