WTW has appointed George Lewkowicz (pictured above) as global proposition leader for P&C capital modelling within its Insurance Consulting and Technology (ICT) business, placing him at the helm of Igloo, the firm's flagship risk analytics platform.

Lewkowicz, based in London, brings nearly two decades of experience in capital modelling, reinsurance pricing and reserving. He joined WTW in 2022 and has since led Igloo's development.

In his new role, he will oversee the firm's global P&C capital modelling and reinsurance pricing solutions, spanning innovation, business development and client-specific work.

Charlie Kefford, global proposition leader for P&C Insurance Technology at WTW, called the move a reflection of the firm's broader talent strategy.

"This appointment reflects our commitment to investing in exceptional talent and strengthening our capital modelling and reinsurance pricing capabilities," he said. "George brings a wealth of experience and a proven track record of delivering results, which will be instrumental in enabling our clients to succeed."

Igloo currently serves more than 1,000 users across over 150 companies – from single-line businesses to large multinationals – including six of the top 10 US non-life insurers, five of the top 10 European insurers and six of the top 10 Asia-Pacific non-life insurers.

WTW says the design prioritises model transparency over black-box outputs, spanning regulatory and economic capital modelling, reinsurance optimisation and business planning under a single framework.

The appointment arrives as the reinsurance market navigates a notable inflection point. Dedicated reinsurance capital grew an estimated 9% in 2025, fuelled by underwriting profits and rising investor appetite for both traditional and alternative capital, data from Guy Carpenter shows.

That expansion drove accelerated softening across many lines at the January 1, 2026 renewals — what Guy Carpenter characterised as a market shaped by capital growth.

In a previously announced move, WTW also named Chris Varley as global proposition leader for commercial lines pricing and underwriting – a return to the firm for Varley, who had served as senior director before leaving to join Allianz Commercial UK as chief data and analytics officer and later chief underwriting officer.

Both appointments come against a backdrop of previously reported full-year 2025 results, in which WTW posted organic revenue growth of 5%, against a reported revenue decline of 2% to $9.7 billion driven by the sale of TRANZACT.

The ICT segment recorded just 1% full-year organic growth, compared with a 10% revenue gain for the Risk & Broking segment in Q4.