RenaissanceRe’s Syndicate 1458 tops Insurance DataLab Lloyd’s ratings

RenaissanceRe-managed Syndicate 1458 has been named the best-performing Lloyd’s syndicate in Insurance DataLab’s 2026 Lloyd’s Underwriting Ratings.

The syndicate achieved an overall score of 77.0%, narrowly ahead of last year’s winner, Aegis-managed Syndicate 1225, by less than one tenth of a percentage point.

Brit-managed Syndicate 2987 ranked third with a score of 75.6%.

Insurance DataLab assesses syndicates across three measures: current-year underwriting performance relative to gross written premium, aggregate underwriting performance over three years, and year-on-year improvement.

Syndicate 1458 generated an underwriting profit of £92.6m from £624.3m of GWP in its latest accounts, up from £18.0m the previous year.

That improvement earned the syndicate the maximum 95% rating for year-on-year improvement and helped propel it to the top of the rankings for the first time.

Aegis-managed Syndicate 1225 reported an underwriting profit of £210.6m from £835.9m of GWP, with aggregate underwriting profit over the past three years reaching £506.4m.

It achieved the highest current-year and three-year underwriting performance scores among this year’s Gold Award winners, at 78% and 75% respectively.

Brit-managed Syndicate 2987 also received the maximum 95% improvement score after underwriting profit rose from £32.0m to £106.5m.

Nine syndicates received an Insurance DataLab Underwriting Gold Award in total, including businesses managed by AXA XL, Chubb, Apollo, Blenheim Underwriting, Tokio Marine Kiln and MS Amlin.

Matt Scott, co-founder of Insurance DataLab, said: “There was incredibly little to separate the two highest-rated syndicates this year, but the substantial improvement delivered by RenaissanceRe with Syndicate 1458 over the past 12 months was enough to see it take the top spot for the first time.

“These results demonstrate why it is important to look at underwriting performance from more than one angle.”