 In May 1938 A.P. Rowe took over Bawdsey Manor from Watt , who had been appointed Director of Communications Development at the Air Ministry . Many members of the radar team have described Rowe as insufferably by @-@ the @-@ book and have registered their disapproval . He became infamous for a string of station orders on all facets of life , as trivial as an order to conserve razor blades by sharpening them on glass , and for considering requiring formal dress for dinner . In one infamous example , Rowe wrote a memo complaining that he was " astonished " that members of the team bought tea from a local canteen in the morning , stating that he was " strongly in favour of tea in the afternoon . " This constant stream of memos affected the AI team in particular ; Bowen , Hanbury Brown , and Lovell have all described their problematic relationship with Rowe . They were not alone ; Arnold Wilkins , the inventor of radar in the UK and Watt 's right @-@ hand @-@ man , soon left to join Watt in London . 
