Yes we did. Court line handled Dan Air flights in the earlier days before Dan set up the base properly.(Comets and 1-11s at that time)
The flying club at Luton was a regular meeting place for all the airline staff and you would tend to have corner for Court Line another corner for Monarch etc but you would inevitably mingle and get to know each other.
The Beverley was never painted pink either. It remained in RAF colours until it was eventually flown out after Court Line collapsed.