Credit rating agency AM Best has indicated that the outlook for the London Market insurance sector remains stable, with profitability expected to moderate through 2026 while still staying positive, provided catastrophe experience remains within normal bounds.
According to AM Best, a combination of pricing dynamics, investment conditions and shifting global risks continues to shape the market’s trajectory.
The agency notes that although pricing conditions have begun to soften in several lines, they are still broadly sufficient to support underwriting performance.
At the same time, relatively elevated interest rates are expected to sustain favourable investment yields, offering a degree of support to overall profitability. However, AM Best emphasises that a range of uncertainties could weigh on the sector, including geopolitical instability, climate-related exposures and the growing challenge of unmodelled risks.
AM Best highlights that the London Market remains a globally significant hub for commercial and specialty insurance, underpinned by deep underwriting expertise and a well-established regulatory framework.
The market’s ability to develop bespoke coverage for complex risks continues to reinforce its attractiveness on the international stage. Strong underwriting results and profitability recorded between 2023 and 2025 were supported by firm market conditions and relatively manageable catastrophe losses, although more recent trends point to easing pricing, particularly in property and shorter-tail business lines.
Looking ahead, AM Best expects persistent social inflation and historical reserve pressures to continue influencing casualty lines, where pricing adequacy may remain under scrutiny. Although rates in these segments are still considered adequate, they are gradually declining from previously elevated levels. As a result, AM Best anticipates that overall profitability will ease in 2026 compared with recent years, albeit remaining positive.
Investment strategy remains a key factor in supporting returns. AM Best observes that London Market companies typically maintain portfolios weighted towards fixed income securities of strong credit quality, with major markets such as the UK, EU and US continuing to provide resilience against inflationary shocks.
Central bank policies, shaped in part by geopolitical tensions, are likely to keep interest rates higher for longer, which AM Best believes will benefit insurers’ investment income.
The report also points to continued activity in mergers and acquisitions as evidence of the market’s appeal. Several significant transactions have taken place, reinforcing the position of acquiring firms within the specialty insurance and reinsurance space. AM Best notes that these deals often enhance capabilities and expand presence within the London Market, including participation in the Lloyd’s platform.
At the same time, the increasing role of alternative capital is reshaping the competitive landscape. AM Best explains that insurers are making greater use of catastrophe bonds and collateralised reinsurance structures, enabling access to institutional capital and supporting underwriting capacity. While this trend can improve returns on equity and aid cycle management, it also contributes to softer market conditions as additional capital enters the sector.
AM Best cautions that the influx of third-party capital, combined with strong retained earnings in recent years, heightens the risk of further pricing pressure. As a result, disciplined underwriting and careful cycle management are expected to become increasingly important for market participants.
Exposure to large-scale losses remains a defining characteristic of the London Market. AM Best underscores that insurers face significant risks from both natural and man-made catastrophes, with the cost of such events rising over time. Secondary perils, including wildfires, convective storms and droughts, are accounting for a growing share of losses, while non-traditional risks such as pandemics and geopolitical conflicts have underscored the limitations of existing models.
In particular, AM Best warns that an extended crisis in the Middle East could result in material losses for the London Market, especially given its role in underwriting risks across marine, energy and political violence sectors. Such developments could test the resilience of insurers and place additional pressure on pricing and capital management.
The organisation also draws attention to the increasing complexity of cyber risk, where accumulation exposure and systemic threats require careful assessment. AM Best suggests that as cyber business grows in scale and importance, the need for robust pricing and risk modelling will intensify.
Overall, AM Best maintains that while the London Market is well positioned to navigate current challenges, the balance of risks is shifting. Profitability is expected to remain positive but more constrained, with performance increasingly dependent on disciplined underwriting, prudent capital management and the ability to respond to a rapidly changing risk environment.
