Some pretty obscure ones on my list...:
Air Alps
Air Atlantique
Air Bremen
Air Canada
Air Europe
Air UK
ALM
Augsburg Airlines
Aurigny
Austrian Airlines
Britannia
British Airways
British Caledonian
British Island Airways
BWIA
Canadian Airlines
Continental
Dan Air
Deutsche BA
Eurodirect
Eurowings
Finnair
Finnaviation
Gill Air
Go
Hamburg Airlines
KLM
KLMuk
Lauda Air
Lithuanian Airlines
Luxair
Lufthansa
Malev
Northwest
Roland Air
Ryanair
SAS
Suckling Airways
Swissair
- plus one more, and I don't know which one it was. Blackpool to the Isle of Man in 1977. Does anyone know what airline that might have been?