It seems like there were no limits for training locations back then. Luqa for BEA - must have been an Empire thing but I'm surprised the Viscounts had the range to get there. Again, it seems a long way to go. I seem to remember seeing a TV programme featuring a Dan-Air 727 training at Shannon. I suppose a relatively long runway and quiet airspace helped enormously. Do AirTanker not use their HQ of Brize for circuits, I wonder ?