LONDON–(BUSINESS WIRE)– #insurance–AM Best has affirmed the Financial Strength Rating of A (Excellent) and Long-Term Issuer Credit Rating of “a” (Excellent) of Jupiter Insurance Limited (Jupiter) (Guernsey), a captive insurer of BP p.l.c. (bp) [NYSE: BP], an integrated global energy company. The outlook of these Credit Ratings (ratings) is stable.The ratings reflect Jupiter’s balance sheet strength, which AM Best assesses as very strong, as well as its strong operating performance, neutral business profil