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Sonia Tolaney KC

Global 2026

Ranked in 3 practice areas

Dispute Resolution: Commercial Chancery

UK

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Chambers Review

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Chambers Global Guide

Dispute Resolution: Commercial - UK

Star Individual
Star Individuals

Strengths

Sonia is the best there is and she wins the biggest cases. She is rock-solid and gets the ear of the judge because of her incredible manner in court. Judges find her very persuasive.

Sonia is brilliant and a superstar. She strikes fear without even being there. Incredibly effective, she is very incisive and can look at both the big picture and the little picture extremely well.

Putting her in front of clients is the best thing about her. As well as being very technical and good in court, she presents and explains things fantastically.

Sonia is the best advocate at the London Bar. She is just that good that she can read the judge's mind. She knows how the judge wants a case and delivers it in a super powerful but not aggressive way.

Sonia is a go-to KC. She is as smart and charming as they come and gets the client and judiciary to adore her.

Dispute Resolution: Commercial Chancery - UK

Band 1
Band 1

Strengths

Sonia is very good and highly commercial in her approach. She is excellent in court and always in the biggest cases.

The judges clearly appreciate Sonia's advocacy style.

Sonia is genuinely wonderful, brilliant on her feet and extremely bright. She is also a genuine team player, who has no airs and graces and is a delight to work with.

Her mind is incredibly lively and interesting, as well as crammed with legal knowledge. It is a pleasure to work with Sonia.

Competition Law - UK

Band 3
Band 3

Individual Editorial

Sonia Tolaney KC is joint head of chambers of One Essex Court. She frequently acts in some of the most high-profile competition cases, many of which are closely related to her celebrated commercial practice. Tolaney often acts for financial institutions and banks. Notably, she plays an integral role acting for Mastercard in the ongoing dispute with Merricks.

Strengths

She is a very clear communicator and a very persuasive advocate. She has a really strong reputation that she's able to use to get results.

She's a leading light at the Bar, you can absolutely see why. She is a really terrific advocate. She has the respect of the judges and is superb to deal with.

Sonia has incredible gravitas in the courtroom. She knows how to make a point lightly, with real authority, using the fewest words necessary for it to hit home with the court.

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