LONDON--(BUSINESS WIRE)--A.M. Best has affirmed the financial strength rating of A- (Excellent) and the issuer credit ratings of "a-" of Seguros Catalana Occidente, S.A. de Seguros y Reaseguros (SCO) and Bilbao, Compañía Anónima de Seguros y Reaseguros, S.A. (SB), both wholly owned subsidiaries of Grupo Catalana Occidente, S.A. (GCO), the non-operating holding company of the GCO group. All entities are domiciled in Spain. The outlook for all ratings is stable. The ratings of SCO and SB reflect