Meteor U16s were target drones used at RAE Lanbedr for ops in the Cardigan Bay ranges, so I dare say they were calibrating the radio control system. Sea Vixens were used later (mid 70s) and they were modified at Farnborough on contract to Flight Refuelling Ltd. so presumably the Meteors were too. Both types retained a cockpit for a human pilot. The FR test pilot used to come up from Tarrant Rushton to test fly the Vixens after they were modded, and on one occasion, was a bit enthusiastic getting into the cockpit and managed to bang his head on the metal hoop around the windscreen all but knocking himself out.