Following the relocation of BIA to Norwich in 1980/81 the Herald fleet was very quickly reduced, most of the aircraft were broken up at Norwich from memory G-AVEZ, G-ASBG and the Whiskey series, a very few went to museums, some managed to soldier on for a few years with other operators, G-AVPN went to a few operators and ended its days with CEX as a freighter before display at Elvington.
Routes after the merger were mainly as prior to the formation of Air Uk, The Heralds operated the Guernsey-Gatwick, Guernsey-Sou routes, including a night mail on a Guernsey based aircraft, also for a time in 1982 a Herald operated a Norwich - Amsterdam route.
Old,not bold, JEA used SD360 on the CI routes initially, then operated two HS748 "G-BGMO" and "G-BGMN" in the early 1990s, these were phased out by the 6 ex Australian East West F27s that were introduced around 1991.