British Tanker was formed in 1915. The change to BP Tanker is dated 1955, but World Tankers specifies 1 June 1956, distinguishing it from the parent’s December 1954 decision. BP Shipping followed in 1981, dated January by World Shipping and May by Mitchell. It became BP Amoco Shipping in 1999 and reverted to BP Shipping by December 2003. British Petroleum Tankers is also recorded as an alias.
UK, London, Hemel Hempstead and Aberdeen.
Keep the explicit scope label independent; no alias or company identity is inferred.