Having been an employee of the original BIA (British Island Airways) I also carried out maintenance later on around 1990 or so on two aging Series 1 HS748s (G-ARRW and G-BEKG) operated by another BIA, British Independent Airways, operating from Lydd to Ireland, it didn't last very long as the aircraft were unserviceable much of the time.
G-ARRW went on to Nepal and G-BEKG became G-DAAL and operated with Emerald for several years after the demise of BIA.