I may have mentioned before that the records of summer time in the UK from 1940 to 1946 in the Public Record Office were subject to a 100 year extended closure period. After I requested the Home Office to review this extended closure period in February, they concluded after three months that the records could be opened to the public in their entirety (rather than needing to wait until 2047), and after a further three months for the administrative procedure of actually opening them, they recently became available. I examined them (HO 144/22703 and HO 144/22704) yesterday. They serve to confuse the question of whether the double summer time applied was BDST or DBST; both appear in the records, so Howse's DBST needn't be a typo. On 18th April 1941, Sir Stephen Tallents of the BBC wrote to Sir Alexander Maxwell of the Home Office asking whether there was any official designation; the reply of the 21st was that there wasn't but he couldn't think of anything better than the "Double British Summer Time" that the BBC had been using informally. I've put a copy of the Home Office letter at http://student.cusu.cam.ac.uk/~jsm28/british-time/ho-19410421.png and the BBC letter may follow if I get permission from the BBC. The files contain many objections from irate clergymen to the start of double summer time on Easter Sunday in 1942; one entitled "Pilate---Pharaoh---1942" referring to "Scripture history is being repeated this year through decisions of the Government"; another to "the tyrants of Whitehall, who probably never attend church, & even possibly have never heard of Easter". There are also many newspaper clippings (mainly from Scottish papers) objecting to double summer time in general. -- Joseph S. Myers jsm28@cam.ac.uk