Originally Posted by
finncapt
At some time there used to be a callsign "Bealine".
I only had cause to visit it once or twice in my time at BEA, but I recall that the HQ at Ruislip (just by the Northolt runway traffic lights) was (re)named "Bealine House" (I think it was originally "Keyline"). Flights in those days certainly used Bealine as a callsign.