Miller, the London-based specialist re/insurance broker, has turned to a former Lockton partner to lead its global claims function, in a hire that lands as the specialty reinsurance sector grapples with rising claims severity and a softening top line.
Graham Wynes (pictured above) assumed the head of claims role on April 28, the firm said, and will be based in London. He reports to Tim Norman, chief executive of Miller UK, with responsibility for client service delivery and technical standards across the claims lifecycle.
Wynes joins from Lockton, where he served as partner and head of claims for 14 years, working on matters across multiple classes of business and jurisdictions. He began his career in law, spending more than a decade in the legal profession before moving into broking, first at Denton Wilde Sapte, now Dentons, and later as head of legal at Smith & Williamson.
Miller traces its claims handling back to its founding in 1902, and describes its in-house team on its website as "the eyes and ears of the insured." Its property and casualty division alone houses more than 140 specialists across London, Bermuda, Paris, Brussels, Singapore and Japan, integrating claims, placement and technical work.
Dedicated claims desks cover marine, energy, liability and construction, property, facultative reinsurance, and UK and international professions.
Norman said the appointment reflected Miller's standing in the specialty market. "We are thrilled to welcome Graham to the team. His deep market knowledge, leadership experience, and trusted industry relationships will be invaluable as we continue to grow and enhance our claims offering," he said, adding that the move "underscores Miller's reputation as a hub for the industry's best talent."
Wynes pointed to the broker's specialist focus and client orientation. "I'm excited to be joining Miller, a firm known for its deep specialism and client-first culture," he said, noting that the claims function is central to honoring commitments made to clients at placement.
The hire arrives as the operating environment for specialty claims hardens. In its 2026 industry outlook, Markel identified the management of social inflation, through disciplined pricing, careful handling of limits and proactive claims strategies, as a defining theme for the year, citing tariffs and supply chain disruption as further drivers of claim severity.
Swiss Re has forecast global property and casualty premium growth slowing to 4% in 2026 from 5.5% in 2025, a shift that industry observers say is likely to elevate claims advocacy as a competitive differentiator.
Analysts have also pointed to earlier involvement of legal counsel in claims and rising defense costs, trends that play to Wynes's legal background.
Miller previously reported £314 million in revenues for 2025, up 15% year on year, having nearly doubled its revenue base in the five years since separating from WTW. Headcount has since climbed past 1,300, with around 180 joiners added in 2025.
