 Through this period , Rowe finally concluded that Dundee was unsuitable for any of the researchers , and decided to move again . This time he selected Worth Matravers on the southern coast , where all of the radar teams could once again work together . Due to confused timing and better planning on the part of the AI team , they arrived at Worth Matravers from St Athan before the long convoy from Dundee could make its way south . This caused a traffic jam that further upset Rowe . Nevertheless , everything was set up by the end of May 1940 , with the AI team working primarily from huts south of Worth Matravers , and carrying out installations at a nearby airfield . With this move the entire group became the Ministry of Aircraft Production Research Establishment ( MAPRE ) , only to be renamed again as the Telecommunications Research Establishment ( TRE ) in November 1940 . 
