Cryptanalysis of the Enigma immense problem and it gave a great deal of trouble. Work on a high speed machine had been started by Wynn-Williams of the TRE late in 1941 and some nine months later Harold Keen of BTM started work independently. Early in 1942, Bletchley Park were a long way from possessing a high speed machine of any sort. Eventually, after a long period of being unable to decipher U-boat messages, a source of cribs was found. This was the Kurzsignale (short signals), a code which the German navy used to minimize the duration of transmissions, thereby reducing the risk of being
That Was the Week That Was Four to celebrate the 40th anniversary. In a list of the 100 Greatest British Television Programmes up by the British Film Institute in 2000, voted by industry professionals, "That Was The Week That Was" placed 29th. Sherrin attempted to revive the formula with "Not So Much a Programme, More a Way of Life" but was less successful. An American version was on NBC, initially as a pilot episode on 10 November 1963, then as a series from 10 January 1964 to May 1965. The pilot featured Henry Fonda and Henry Morgan, guests Mike Nichols and Elaine May, and supporting performers