SILK PROFILE

Jeffery Onions KC

Global 2026

 One Essex Court

Ranked in 2 practice areas

Energy & Natural Resources

UK

Dispute Resolution: Commercial

UK

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Chambers Review

Provided by Chambers

Chambers Global Guide

Energy & Natural Resources - UK

Band 2
Individual Editorial

Jeffery Onions KC is acclaimed for his undoubted intellect and fierce commitment to complex commercial cases, many of which have a regulatory or environmental angle. He exhibits deep energy sector expertise and acts for heavyweights in the oil and gas industry. His practice spans advisory and advocacy work, and sees him handling both arbitrations and High Court litigation.

Strengths

Jeffery is a great advocate, commercially astute and user-friendly.

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Dispute Resolution: Commercial - UK

Band 5
Strengths

Jeff is extremely responsive.

Always on top of the detail, he gives excellent submissions and knows what tribunals want.

As well as being amazing at his job and very experienced, he is very easy to deal with. His work is exceptional and he is so approachable.

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Ranked Barristers at One Essex Court (134)

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