Gallagher Bassett, the insurance claims services business owned by US giant Arthur J. Gallagher & Co, has completed its third law firm acquisition with the purchase of City maritime specialists Mays Brown, as the company moves to consolidate legal and claims management under a single operation.
The deal adds 15 lawyers and support staff to Gallagher Bassett’s legal team, which now numbers around 180 across its acquired practices. The company first entered legal services in 2017 through its acquisition of Strata Solicitors, one of the earliest alternative business structures established in the UK, followed in 2024 by Caytons Law, a firm with London and Bristol offices serving the insurance industry.
Mays Brown, founded over two decades ago and with a recently opened Newcastle office under senior admiralty lawyer and master mariner Andreas Welz, brings specialist dry shipping and marine casualty expertise that neither earlier acquisition provided.
The rationale is structural rather than merely additive. In the marine sector, third-party administrators such as WK Webster — itself acquired by Gallagher Bassett as part of the same maritime expansion, alongside German marine claims firm Reck & Co — have traditionally represented cargo owners, while shipowners have been served by independent law firms. Acquiring Mays Brown closes that gap, allowing Gallagher Bassett to serve both sides of the commercial relationship within a single integrated operation.
Manan Sagar, chief executive of Gallagher Bassett’s Europe, Middle East and Asia operations, has described the result as positioning the company as the pre-eminent provider of marine claims, legal and consulting services globally. David Wartski, a founding partner of Mays Brown, confirmed that the deal gives the firm access to a broader client base and claims management infrastructure it could not have built independently.
The strategic direction mirrors and in some respects inverts, moves already made by DWF and DAC Beachcroft, both of which have purchased third-party administrator businesses to achieve the same integrated outcome from the law firm side. That two of the UK’s largest insurance-focused law firms have pursued this model, and that a major insurer is now building the same structure from the claims management direction, points to a consolidation dynamic reshaping how PI and marine legal work is allocated and who controls it.
For law firms operating on insurer panels, and for maritime law practitioners in particular, the implications are direct. Gallagher Bassett has confirmed it intends to continue acquiring legal businesses in areas including financial lines, professional indemnity, directors and officers insurance, and clinical negligence — practice areas that sit at the heart of many mid-size and specialist City firms’ income. Matt Foote, the company’s global head of mergers and acquisitions, characterised the approach as strategically driven rather than opportunistic, focused on practices where legal and claims expertise are complementary.
The pattern emerging across the sector suggests that insurers with the scale of Arthur J. Gallagher & Co — a $15bn revenue business employing 70,000 people globally are no longer content to sit at one end of the claims supply chain. For solicitors and barristers whose practices depend on insurer referrals or panel appointments, the question of whether their insurer clients become structural competitors rather than instructing clients is one that panel review cycles will increasingly be forced to confront.