BEA in their earlier times had a tradition of calling their aircraft types by different names, generally a title that reflected the individual names they had given to each of the aircraft. They did this with their piston aircraft, but it died out with turbine types where they started to use the manufacturers' name instead, the Viscount being the first such. So the Vickers Vikings were known as "Admiral", the Airspeed Ambassadors as "Elizabethans", etc. It actually reflected old practice with classes of ships and railway locomotives.
The BEA Ju52s were used for a short while on Scottish internal routes, which apparently caused considerable opprobrium from those recently returned from the war. Probably elsewhere as well. I wonder why they even bothered, with fleets of DC3s - ah - C47s, and crews and engineers qualified on them, standing surplus everywhere.