Four insurers and MGAs active in the UK market have confirmed senior appointments spanning transactional risk, manufacturing resilience, digital trading infrastructure and motor trade underwriting. Two of the four involve net-new role creations rather than straight replacements, reflecting organisations adding leadership capacity in functions that have reached a scale requiring dedicated senior oversight.
Liberty Mutual Insurance Group has appointed Gareth Rees (pictured, left) as global lines leader for its Global Transaction Solutions business, effective July 1, 2026, in an internal promotion that signals continuity at the top of one of the larger global M&A insurance platforms in the market. GTS underwrites representations and warranties, warranty and indemnity, tax liability and contingent risk cover across 13 jurisdictions, with more than 90 specialists closing in excess of 1,500 deals a year - a scale that makes the succession choice analytically significant.
Rees joined GTS in 2015 and has spent the past six years as chief underwriting officer, working closely with the unit's leadership across EMEA, APAC and the Americas. A former corporate lawyer with extensive M&A experience, he succeeds Rowan Bamford, who has left the business to pursue new opportunities. The internal promotion preserves the institutional knowledge of a CUO who has worked across all three regions rather than importing external leadership at a moment when transactional risk market conditions - seven consecutive quarters of declining M&A acquirer performance per WTW's Q2 2026 data - add complexity to portfolio management.
Arch Insurance International has appointed Fred Bisson (pictured, right) as head of digital algorithms, effective immediately - a newly created role covering Arch's international platform across the London Market, UK Regional, Australia, EU and Bermuda. The creation of the role is the most analytically significant detail. Digital placement volumes and broker API connectivity have reached a scale and complexity at Arch's international platform that requires dedicated algorithms leadership rather than absorption within a data science or analytics function. Based in London and reporting to Steven Perkins, head of strategic analytics, Bisson will develop algorithmic solutions to strengthen digital trading capabilities and work with underwriting teams to respond to brokers' evolving digital placement needs.
Bisson joined Arch in 2024 as data science director and previously held predictive modelling and actuarial roles at Allianz Commercial and WTW.
FM has appointed Marie Diez (pictured, centre) to lead FM Essential in EMEA. The product is aimed at manufacturers with medium-risk complexity - a segment FM's traditional engineering-led model has not historically served cost-effectively, where the depth of loss prevention and risk engineering that defines FM's proposition for large industrial clients has carried a cost and governance burden that mid-market manufacturers have found difficult to justify. FM Essential is designed to change that equation by combining FM's engineering expertise with more flexible risk transfer options at a price point suited to the segment.
Lumara, the MISSION-backed MGA specialising in business and motor trade combined insurance, has appointed Jason Hartard as motor trade development underwriter, covering London and the South of England. Hartard brings more than 20 years of motor trade underwriting experience and established broker relationships across the region.
Lumara launched in November 2025 as the eighth UK MGA backed by incubator MISSION, founded by former Covéa underwriters David Aslin and Mark Greig, positioning itself around direct underwriter access and relationship-driven service. The MGAA now represents more than 430 member organisations - a figure that illustrates how crowded the specialist underwriting space has become for new entrants competing on service rather than price, and how much the regional motor trade underwriting relationships Hartard brings matter in a market where differentiation on product alone is increasingly difficult.
