LONDON--(BUSINESS WIRE)--A.M. Best has placed under review with developing implications the issuer credit rating (ICR) of “a-” of Amlin plc (Amlin) (United Kingdom), the financial strength rating (FSR) of A (Excellent) and the ICR “a+” of Amlin AG (Switzerland), the FSR of A+ (Superior) and the ICR of “aa-” of Lloyd’s Syndicate 2001 (United Kingdom), and the issue rating of “bbb+” on GBP 230 million 6.5% fixed-to-floating rate subordinated notes maturing 18 December 2026 issued by Amlin. The ra