The LBA-based HS748 (usually G-ARAY) operated a part of the Link City network. Latterly it was LBA-GLA-LBA-BRS-CWL-LBA, twice a day, Monday to Friday. Metropolitan assumed the route in 1984 and went under within about a year.
Dan-Air also brought their 737s through LBA, on w-patterns to the Med and Jersey. I don't know if they were used quite as intensively as the Monarch and Britannia examples.