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Mark Cannon QC

Call: 1985 QC: 2008


Combining an “immense intellect and awe-inspiring knowledge of the law” with a “very attractive advocacy style”, Mark is a commercial practitioner specialising in professional liability claims in a commercial context (acting for both claimants and defendants), insurance and reinsurance, construction and commercial disputes. He appears before the Commercial Court, Chancery Division, TCC and appellate courts as well as in arbitrations.

Mark has been described in the Directories as ”impressive in court and possessed of a very agile brain”, "responsive, hands-on and hard-working. What he doesn't know about professional negligence is not worth knowing", “extremely solid and punchy”, “prepared to roll up his sleeves and get into the facts and documents”, “superb”, “very good at recognising the commercial parameters within which his clients operate”, “technically excellent”, “scarily clever”, “a real trooper who holds his corner in court well”, “a great ideas man" and “second to none in terms of intellectual ability”. He has been said to have “a velvet-gloved grasp of the law”, “an eye for legal minutiae” and “very good judgment in all that he undertakes”.

Over the last 20 years Mark has been instructed in a number of long-running, large cases and he is used to working as part of a team of lawyers and experts in substantial litigation. He relishes the challenge of working with others to master complex facts and difficult points of law, to make the right tactical decisions, to put forward the best possible case and to achieve the best possible result at the right time.

Mark is co-author of Cannon & McGurk on Professional Indemnity Insurance (OUP, 2010) and has been an editor of Jackson & Powell on Professional Liability (Sweet & Maxwell, 7th edition) since the 3rd edition (1992).

He is a former chairman of the Professional Negligence Bar Association and is also a member of the Chancery Bar Association, COMBAR, London Common Law & Commercial Bar Association, Tecbar and the Western Circuit.


B.A. (Oxon) (First Class)