Insurer competition in the UK has remained strong through the first half of 2025, according to Aon’s latest market outlook.
Despite ongoing geopolitical instability and an uncertain economic environment, this competition has resulted in buyer-friendly conditions for most insurance lines, a trend that began in late 2024 and has persisted into the second quarter of this year.
In its report, Aon noted that plentiful capacity from insurers seeking growth in new or established lines has led to pricing reductions in the UK insurance market, with rates falling between -10% and -20% or more over the second quarter. The exceptions to this trend are motor and US-exposed casualty risks, where insurer appetite remains constrained.
Organisations have been able to negotiate additional benefits, such as risk management bursaries and low claims discounts, and in some cases, reinstate coverage areas that were previously withdrawn during the hard market.
The current environment has also given buyers the opportunity to expand their coverage, including higher limits, which is increasingly important given inflationary pressures on claims costs. Aon notes that organisations should consider reassessing their insurance programmes to take advantage of the more favourable conditions, while remaining mindful of volatility in areas such as supply chains, inflation, technology, and geopolitical risks.
Michelle Beverley, chief broking officer for Commercial Risk, United Kingdom at Aon, highlights the opportunity for insurance buyers to review their programmes and consider alternative risk transfer solutions.
“Given the favourable market conditions, insurance buyers have a great opportunity to take a fresh look at their insurance programmes and expand coverage, while taking advantage of alternative risk transfer solutions like parametrics to reduce future market volatility,” Beverley said.
In tandem, the insurance-linked securities (ILS) market has also seen significant growth, according to Aon’s 19th annual ILS report. Alternative capital in the ILS market reached a record US$121 billion by mid-2025, with sidecar vehicles accounting for an estimated US$17 billion of that total.
Despite a year marked by heavy catastrophe activity, including hurricanes and wildfires, catastrophe bonds delivered a 14.1% return over the 12-month period ending June 2025, based on the Aon Securities Catastrophe Bond Total Return Index.
The professional indemnity insurance market in the UK is expected to remain highly competitive for the remainder of 2025, with insurers continuing to seek new business. However, Aon points out that rates remain dependent on profession and individual risk, and some professions continue to see flat or only modest rate decreases. Insurers are placing a premium on proactive risk management from insureds.
In the cyber insurance sector, Aon observes stability despite the ongoing evolution of cyber threats and the unknown impact of artificial intelligence. Insurers are focusing on coverage enhancements and proactive risk partnerships rather than blanket restrictions or rate hikes. The market remains underinsured, making it an opportune time for organisations to purchase or review cyber cover.
Motor fleet insurance continues to face claims inflation, particularly as repair and replacement costs rise. Nevertheless, Aon expects the competitive environment among insurers to persist through the rest of 2025. Buyers demonstrating strong risk management, especially in fleet and driver behaviour, are likely to achieve the most favourable outcomes.
For construction insurance, rates are trending downwards for simple four walls construction, while pricing for complex risks remains flat. New capacity entering the market may further increase competition, but Aon advises that robust risk management and early engagement at renewal remain essential for securing the right level of coverage.
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