Well I used to live in the Pennine hills in those days and would always look out of the window during school hoping to see the Big Orange (not Billy Connolly) going past. I did not visit LGW at that time so the memory of who flew where is not good.

Now if we want to do the british equivalent of Braniff, what about CourtLine?

One controller asked his assistant to find out the registration of the Courtline aircraft he had on frequency. The controller knew the relationship between colour of the aircraft and the registration and called the pilot something like..

Courtline 123, London Control
Go Ahead Courtline 123
Courtline 123, are you flying the purple one today?
slight pause whilst pilot looks out of window to check
Affirmative, how did you know? Courtline 123
Ah, it's our new colour radar displays, London Control out.