As dada said..... Im sure someone like Euroair operated with a 748 LHR-CAX-DND-LHR many years ago when small planes were allowed at LHR.......I though it was British Independent Airways but wern't they at Lydd....confused. Cant see why a 146-100 can't operate from Carlisle as rwy 07/25 is 1837m.........Now they have a web-page under construction doesn't that sound any alarm bells...