OLDWICK, N.J.–(BUSINESS WIRE)–A.M. Best has affirmed the Financial Strength Rating (FSR) of A (Excellent) and the Long-Term Issuer Credit Ratings (Long-Term ICR) of “a” of the subsidiaries of the parent holding company, The Hanover Insurance Group, Inc. (THG) [NYSE: THG], collectively referred to as Hanover Insurance Group Property and Casualty Companies (The Hanover). Additionally, A.M. Best has affirmed the Long-Term ICR of “bbb” and all Long-Term Issue Credit Ratings (Long-Term IR) of THG.