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William Flenley KC

William Flenley KC

UK Bar 2026

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Hailsham Chambers
 Hailsham Chambers

Ranked in 1 practice area

Professional Negligence

London (Bar)

26 years ranked

About

Provided by Hailsham Chambers

UK Bar

Practice Areas

William Flenley KC practises in the fields of professional liability, insurance, regulatory and contract law. He has appeared in a number of leading cases relating to the liability of professionals, and professional indemnity insurance.

Professional Memberships

Professional Negligence Bar Association (former Chairman). Bencher of the Middle Temple.

Publications

Co-author, Solicitors’ Negligence and Liability (Flenley & Leech, 4th ed., 2020). An original contributor to Professional Negligence and Liability (Informa): sections on SAAMCo, causation, mitigation, contribution. A former contributor to Cordery on Legal Services. Formerly assistant general editor, Lloyd’s Reports: Professional Negligence (2000-2003). Ough and Flenley, The Mareva Injunction and Anton Piller Order (2nd ed., 1993): freezing orders, search and seizure orders.

Personal

William is the co-author, with Mr Justice Leech, of the leading text for practising lawyers about claims relating to solicitors. He has been listed as a leading barrister practising in professional liability by each of the two principal directories for many years. From 1990 until 2023 he was a board member of homelessness charities Bondway and then Thames Reach.

Chambers Review

Provided by Chambers

UK Bar

Professional Negligence - London (Bar)

Band 1
Individual Editorial

Well versed in the full spectrum of professional liability work, William Flenley KC serves as an arbitrator and a mediator, as well as an advocate. He specialises particularly in solicitors' negligence, on which subject he has co-authored a leading reference text.

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Strengths

Provided by Chambers

  • William is exceptional.

    Professional NegligenceUK Bar

  • He gives clients confidence and is a wonderful person.

    Professional NegligenceUK Bar

  • William Flenley KC is very bright and knowledgeable on esoteric bits of the law. He is absolutely first rate: his advocacy is authoritative, and judges just believe him.

    Professional NegligenceUK Bar

Ranked Barristers at Hailsham Chambers (44)

All Circuits

London (Bar)

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