-

AM Best Affirms Credit Ratings of United Kingdom Mutual War Risks Association Limited

LONDON--(BUSINESS WIRE)--AM Best has affirmed the Financial Strength Rating of A- (Excellent) and the Long-Term Issuer Credit Rating of “a-” (Excellent) of United Kingdom Mutual War Risks Association Limited (UK War Risks or the Association) (United Kingdom). The outlook of these Credit Ratings (ratings) is stable.

The ratings reflect UK War Risks’ balance sheet strength, which AM Best assesses as very strong, as well as its adequate operating performance, limited business profile and appropriate enterprise risk management.

UK War Risks’ balance sheet strength is underpinned by its risk-adjusted capitalisation at the strongest level, as measured by Best’s Capital Adequacy Ratio (BCAR). Capital consumption is driven largely by investment risk, as UK War Risks cedes almost all of its underwriting exposure to third-party reinsurers, barring a marginal deductible for certain risks and a relatively low annual aggregate deductible. The balance sheet strength assessment also considers the Association’s small capital base and material dependence on reinsurance. Counterparty credit risk is mitigated partly by the excellent credit quality and good diversification of the Association’s reinsurance panel, with which it has long-standing relationship.

While UK War Risks’ overall earnings in recent years have benefited from elevated premium levels, historical operating performance has been dependent on investments earnings due to the Association’s limited risk retention. Prospective operating performance is expected to remain sensitive to fluctuations in premium volume and volatility in investment results, with the latter being impacted by the Association’s exposure to riskier asset classes such as equities.

UK War Risks has an established profile as a specialist underwriter of marine war risk insurance, covering a range of commercial vessels worldwide. However, the Association is of limited size, is vulnerable to competition, and has a concentrated membership base, which is looking to mitigate via a renewed focus on expansion and diversification of members.

This press release relates to Credit Ratings that have been published on AM Best’s website. For all rating information relating to the release and pertinent disclosures, including details of the office responsible for issuing each of the individual ratings referenced in this release, please see AM Best’s Recent Rating Activity web page. For additional information regarding the use and limitations of Credit Rating opinions, please view Guide to Best’s Credit Ratings. For information on the proper use of Best’s Credit Ratings, Best’s Performance Assessments, Best’s Preliminary Credit Assessments and AM Best press releases, please view Guide to Proper Use of Best’s Ratings & Assessments.

AM Best is a global credit rating agency, news publisher and data analytics provider specialising in the insurance industry. Headquartered in the United States, the company does business in over 100 countries with regional offices in London, Amsterdam, Dubai, Hong Kong, Singapore and Mexico City. For more information, visit www.ambest.com.

Copyright © 2025 by A.M. Best Rating Services, Inc. and/or its affiliates. ALL RIGHTS RESERVED.

Contacts

Patrick McCrystal
Financial Analyst
+44 20 3808 2988
patrick.mccrystal@ambest.com

Valeria Ermakova
Associate Director, Analytics
+44 20 7397 0269
valeria.ermakova@ambest.com

Christopher Sharkey
Associate Director, Public Relations
+1 908 882 2310
christopher.sharkey@ambest.com

Al Slavin
Senior Public Relations Specialist
+1 908 882 2318
al.slavin@ambest.com

AM Best


Release Versions
Hashtags

Contacts

Patrick McCrystal
Financial Analyst
+44 20 3808 2988
patrick.mccrystal@ambest.com

Valeria Ermakova
Associate Director, Analytics
+44 20 7397 0269
valeria.ermakova@ambest.com

Christopher Sharkey
Associate Director, Public Relations
+1 908 882 2310
christopher.sharkey@ambest.com

Al Slavin
Senior Public Relations Specialist
+1 908 882 2318
al.slavin@ambest.com

Social Media Profiles
More News From AM Best

AM Best Affirms Credit Ratings of Harrington Re Ltd. and Harrington Reinsurance Holdings Limited

OLDWICK, N.J.--(BUSINESS WIRE)--AM Best has affirmed the Financial Strength Rating of A- (Excellent) and the Long-Term Issuer Credit Rating (Long-Term ICR) of “a-” (Excellent) of Harrington Re Ltd. (Harrington). AM Best also has affirmed the Long-Term ICR of “bbb-” (Good) of Harrington Reinsurance Holdings Limited. Both companies are domiciled in Bermuda. The outlook of these Credit Ratings (ratings) is stable. The ratings reflect Harrington’s balance sheet strength, which AM Best assesses as v...

AM Best Affirms Credit Ratings of ACMAT Corporation and ACSTAR Insurance Company

OLDWICK, N.J.--(BUSINESS WIRE)--AM Best has affirmed the Long-Term Issuer Credit Rating (Long-Term ICR) of “bbb” (Good) of ACMAT Corporation (ACMAT) (Farmington, CT) [OTC Market: ACMT]. Concurrently, AM Best has affirmed the Financial Strength Rating of A (Excellent) and the Long-Term ICR of “a” (Excellent) of ACMAT’s wholly owned subsidiary, ACSTAR Insurance Company (ACSTAR) (Chicago, IL). The outlook of these Credit Ratings (ratings) is stable. The ratings reflect ACSTAR’s balance sheet stren...

Best's Review Looks at How Insurance Education Is Evolving

OLDWICK, N.J.--(BUSINESS WIRE)--In its February Issue, Best’s Review asks industry professionals how academic institutions can better prepare tomorrow’s insurance workforce. In their responses, leaders say they need their employees to develop better communication skills; adapt to the emerging technologies that have entered the insurance space, such as AI; and develop critical thinking skills to ensure a tight grasp of the intricacies of insurance. Read “Learning Curve: Our Readers Identify Gaps...
Back to Newsroom