Yes indeed. I related all the facts regarding the locations of all the military Comets. There was NO Comet 4C based at RRE (not RRU) Pershore! The only possible answer was it was one of those I listed detached from Farnborough. As the RAE later absorbed RRE and Pershore became RAE Pershore, that is more than likely it was Comet 4 (not '4C')XV814 which was operated by the Avionics Division, or possibly XX944.