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John Groome

Partner // Head of Global Casualty & Property, London

John is a Partner in the Insurance team and head of the Global Casualty & Property group.
John Groome


John has over 30 years' experience acting for insurers and reinsurers, handling complex casualty and property claims. In particular he has a specialism in advising on policy coverage issues for both primary and excess layer insurers in respect of national and international risks. He is a CEDR accredited mediator and a Member of the Chartered Institute of Arbitrators.

His work spans the jurisdictions, in particular USA, Germany and India. He is an associate member of the American Bar Association, acting for the London insurance market in respect of coverage disputes involving US losses. He is currently representing insurers in a $200 million coverage dispute in Tennessee and advising on losses in a number of US states. He also advises insurers on coverage disputes arising from the supply of products from India. John is a member of the British German Jurists Association and acts for both German and London market insurers in respect of global losses. He is currently advising on a contaminated products claim following a recall in Germany.

John co-authored the chapter on Product Liability in the latest edition of Insurance Disputes.

He acts for insurers and reinsurers handling complex casualty and property coverage claims. He also acts for insurers in respect of medical device and pharmaceutical claims, offshore and onshore energy risks, property losses, D&O liabilities and, for professional indemnity insurers, defending claims against insurance brokers. 

He is a member of the Mid-Sussex Golf Club; what he lacks in skill he likes to think that he makes up for with enthusiasm. He is also a long suffering supporter of Southampton FC.


Legal 500 has ranked him as a leading individual in the Insurance and Reinsurance Litigation category and states that John is a "focused technical lawyer and a pleasure to do business with" and "has a wealth of experience in coverage, property and product liability matters". 

The latest edition of Chambers & Partners states under Insurance: Contentious Claims & Reinsurance:  "John Groome is head of the firm's global casualty insurance team and has wide experience handling complex disputes on behalf of insurers. His expertise extends to international matters, particularly in the USA." Clients say: "John is extremely easy to work with and has a wealth of experience."