-

AM Best Assigns Credit Ratings to Mereo Insurance Limited

OLDWICK, N.J.--(BUSINESS WIRE)--AM Best has assigned a Financial Strength Rating of A- (Excellent) and a Long-Term Issuer Credit Rating of “a-” (Excellent) to Mereo Insurance Limited (Mereo) (Hamilton, Bermuda). The outlook assigned to these Credit Ratings (ratings) is stable.

The ratings reflect Mereo’s 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 (ERM).

The ratings also reflect AM Best’s expectation that, based on Mereo’s business plan, the company will maintain a balance sheet strength assessment of very strong supported by its projected risk-adjusted capitalization being at the strongest level throughout the five-year initial forecast period, as measured by Best’s Capital Adequacy Ratio (BCAR). Initial capitalization in 2024 and retained earnings through the forecast period are expected to support Mereo’s premium growth, which is expected to be rapid in its early years, based on projections. The company’s capital is anticipated to be managed through the use of reinsurance and potentially third-party capital. Investment risk is projected to be low given its conservative investment portfolio, which will remain matched closely to the evolution of the liability profile, supporting stability in future balance sheet metrics.

The adequate operating performance assessment and the limited business profile assessment are based on Mereo’s business plan as presented to AM Best. The plan includes rapid premium growth in its initial years and improving operating profitability that supports an adequate operating performance assessment. Outlined in the plan is a portfolio composed of casualty and specialty business diversified by subcategories, geographies, and attachment points. Mereo’s senior management team is composed of individuals with extensive experience and strong track records in the industry. The limited business profile assessment, nevertheless, considers the execution risk faced by any start-up operation, in recognition of the customary challenges associated with gaining market acceptance in the casualty and specialty space, while remaining profitable. An ERM structure has been established initially and is expected to develop as the product risks complexity of the business evolves.

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 specializing 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

Antonietta Iachetta
Associate Director
+1 908 882 1901

antonietta.iachetta@ambest.com

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

Gregory Dickerson
Director
+1 908 882 1737
gregory.dickerson@ambest.com

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

AM Best


Release Versions
Hashtags

Contacts

Antonietta Iachetta
Associate Director
+1 908 882 1901

antonietta.iachetta@ambest.com

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

Gregory Dickerson
Director
+1 908 882 1737
gregory.dickerson@ambest.com

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

Social Media Profiles
More News From AM Best

Best's Review Looks at the Benefits of Agent Networks

OLDWICK, N.J.--(BUSINESS WIRE)--In its March Issue, Best’s Review examines how agents are seeking to gain an edge by becoming part of an agent network. The scope of the assistance that these networks provide has grown in recent years to include services like business development, technology and ancillary advice, insurance leaders say. Like the broader insurance industry, agent networks have been boosted by the recent entrance of private equity. Read “Agent Networks Offer More Tools, Access.” An...

Best’s Special Report: More Upgrades, Fewer Downgrades for U.S. Life/Health Insurers in 2025

OLDWICK, N.J.--(BUSINESS WIRE)--Rating change activity in the U.S. life/health segment declined overall in 2025, with downgrades for Long-Term Issuer Credit Ratings also decreasing slightly to 6.4% of the segment's rating actions, compared with the same prior-year period, according to a new AM Best report. The Best’s Special Report, titled, “Rating Affirmations and Upgrades Rise in 2025, Downgrades Drop for US Life/Health Insurers,” notes that U.S. life/annuity insurers have benefited from reco...

Best’s Special Report: US Property/Casualty Rating Affirmations Rose in 2025 While Upgrades Outnumbered Downgrades

OLDWICK, N.J.--(BUSINESS WIRE)--For the first time in several years, rating upgrades outnumbered downgrades for the U.S. property/casualty (P/C) industry in 2025, driven by the performance within the commercial insurance segment, according to a new report from AM Best. The Best’s Special Report, titled, “US P/C Rating Affirmations Rose in 2025 While Upgrades Outnumbered Downgrades,” notes that rating affirmations were the most common rating action taken across all segments in 2025, increasing t...
Back to Newsroom