OLDWICK, N.J.–(BUSINESS WIRE)–A.M. Best has affirmed the Financial Strength Rating of A+ (Superior) and the Long-Term Issuer Credit Ratings (Long-Term ICR) of “aa” of The Great-West Life Assurance Company (Winnipeg, Manitoba) and its affiliates, London Life Insurance Company (London, Ontario), The Canada Life Assurance Company (CLAC) (Toronto, Ontario), Great-West Life & Annuity Insurance Company (GWL&A) (Greenwood Village, CO) and Great-West Life & Annuity Insurance Company of Ne