Well done all ! Is it continuous though?
I'm sure there was a very brief period in, I want to say 1995 when Loganair were merged into British Regional Airlines. I recall a Twin Otter in BA colours using a "British" callsign. They were de-merged in a matter of weeks/months and sold to the management.
They have certainly bounced back from being downsized to the Islanders and a single Twin Otter.
JSCL just saw this, I meant as brand to the paying customer, the operation was ScotAirways operationally.