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Mayer Brown International LLP

Living Wage
Work 020 3130 3000
Fax 020 3130 3001

Will Glassey

Work +44 20 7398 4640
Mayer Brown

Work Department

Insurance and Reinsurance


Will Glassey is a litigator whose practice deals principally with the defence of professional negligence claims. He has a particular emphasis on defending claims against solicitors, barristers, pensions actuaries and property professionals. He also conducts insurance coverage disputes, under both direct and reinsurance contracts. Will works with some of the UK's leading firms and their insurers to conclude sensitive and complex claims, discreetly and economically. Many such claims are concluded in early pre-action stages, some settle at mediation, and some are resolved by trial in Court or arbitration. The subject matter of the solicitors’ claims Will defends is diverse, but he has a particular focus on claims arising from transactions, including corporate, commercial, real estate and finance transactions, and he has extensive experience in claims arising from pensions and tax issues. Will Glassey also advises insurers on policy issues arising in claims against professionals, particularly solicitors, including the aggregation of claims, notification and claims control provisions, and successor practice and run-off issues. Will also continues to represent insurers and reinsurers in reinsurance coverage disputes.


University of Auckland 1992 LLB (Hons)

London: Insurance

Insurance and reinsurance litigation

Within: Insurance and reinsurance litigation

Mayer Brown International LLP advises insurers on disputes across a variety of insurance sectors, including multi-jurisdictional coverage, warranty and indemnity policies, D&O, transactional liability and cyber insurance. Practice head William Glassey has particular expertise in professional indemnity, while Jane Childs specialises on financial lines and transactional liability claims. After a number of departures in 2017 and 2018, the firm reaffirmed its commitment to the sector with the promotion of two partners - James Whitaker and James Morris.

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Professional negligence

Within: Leading individuals

William Glassey - Mayer Brown International LLP

Within: Professional negligence

Mayer Brown International LLP's 'robust and creative team' is engaged on high-profile professional negligence disputes across the legal, engineering, construction and property sectors, where it is instructed by a raft of leading insurers. The team is commended for its international reach and for its experience in cross-border disputes. Head of insurance William Glassey regularly defends claims against solicitors, barristers, pensions actuaries and property professionals, while Michael Regan, who heads the construction and engineering group, is noted for complex construction-related claims. Sally Davies, who co-leads the construction and engineering professional indemnity team, is 'very client-friendly, and is able to steer a course between insurer and insured to deliver a result'. Elsewhere, Jim Oulton delivers 'really outstanding client care and legal advice', and James Morris, who was recently promoted to partner, and Jonathan Stone are experienced in construction-related claims.

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