Premiums
For 2024, gross written premium totalled $2,384.8m (2023: $2,110.3m), an increase of $274.5m (13%)
compared to the prior year.
2024 saw another year of notable growth as favourable trading conditions persisted.
US Casualty Reinsurance classes benefitted from material risk adjusted rate increases in response to market-
wide adverse reserve development, and Property Reinsurance classes continued to achieve loss-driven risk
adjusted rate rises, although more subdued than in recent years. Conditions became selectively more
challenging in the Insurance classes, given the cumulative positive rate increases in the last few years,
however price adequacy remained in most lines with terms and conditions generally meeting appetite. This
increase was marginally offset by the prior year containing an element of income in respect of Casualty and
Aviation classes which the Syndicate chose to strategically exit and a reduction in current year Cyber
Reinsurance income due to non-renewals following imposition of war clause restrictions.
Analysis of the gross written premiums by class of business is presented in Note 3: Segmental Analysis in the
notes to the annual accounts.
Net written premiums increased to $1,829.5m in 2024 (2023: $1,625.4m) and net earned premiums to
$1,722.5m (2023: $1,515.9m), with the year-on-year increases consistent with the respective increases in
gross volumes as Syndicate reinsurance protections were substantially unchanged.
Underwriting result
Comparable to 2023, the underwriting result for 2024 is a profit of $248.9m (2023: $252.5m), resulting in a
combined ratio of 85.6% (2023: 83.3%).
The increase in the combined ratio is driven by catastrophe loss experience being marginally more adverse to
the prior year due to an increased frequency of smaller cat losses, and less favourable prior year development,
principally due to strengthening reserves held for potential losses arising from the Russian invasion of Ukraine.
The most notable catastrophe losses in 2024 were from the flooding in Dubai, Hurricanes Milton and Helene,
Typhoon Yagi and hailstorms in Calgary, Canada. A reserve was also booked in 2024 for potential losses
related to the collapse of the Francis Scott Key Bridge in Baltimore, US. Notable Catastrophe events resulting
in losses in 2023 were Cyclone Gabrielle, NZ Floods, the Israel/Gaza conflict and Hawaii Wildfires.