Interception radar (AI) were sent to RAF Scone, a small, formerly civilian airfield near Perth that was entirely unsuited to the scale of their work. Complaints by one of the AI team members worked their way up to higher levels of the Ministry, which led to a search for a more suitable location. Late in the year, the AI team was moved to RAF St Athan in Wales, but ultimately found the location to be only marginally better than Perth. The "Army Cell" that had formed to take advantage of the AMES research initially followed their moves. In 1941 they moved to join their colleagues of the Air Defence Experimental Establishment who had recently moved from RAF Biggin Hill to Christchurch, Dorset on the south coast of England. The merged group became the Air Defence Research and Development Establishment (ADRDE). Worth Matravers By the early part of 1940 it was clear that the location in Dundee was not going to work in the long term. A new location was ultimately selected west of Worth Matravers on the south coast of England, a short distance from the ADRDE teams. The location had a number of advantages, including good views over the English Channel not unlike the ones they had at Bawdsey. However, there was also no infrastructure at the site, which had to be hurriedly prepared. As there was no real village at the site, the location is often referred to as Swanage, a small town a short distance to the east. The move took place in late May 1940, and further annoyance was created when the careful planning for the move was upset with the AI team arrived first. On arrival, what was AMES was renamed again as the Ministry of Aircraft Production Research Establishment (MAPRE). It was established as the central research group for RAF applications of radar. The name was once again changed to the Telecommunications Research Establishment (TRE) in November 1940. Malvern In parallel with these technical developments, the Ministry of Home Security developed a plan, early in 1939, "to evacuate the critical functions of government out of London" if a threat of air raids developed. A site was purchased in Malvern for the Ministry itself. Although it was not developed, the location had become well known to defence officials. The Air Ministry acquired jurisdiction, and used the site for a Signals Training Establishment, housed in prefabricated