These are some of the timing logs for DMU services that have been published in magazines:
Chepstow - Birmingham (Cecil J Allen) p859 December 1957 The Railway Magazine
Edinburgh - Glasgow (OS Nock) p409 June 1959 The Railway Magazine
Wymondham - Norwich (and other East Anglian notes) (OS Nock) p783 November 1959 The Railway Magazine
Midland Pullman (OS Nock) p797 November 1960 The Railway Magazine
Bristol Pullman (OS Nock) p866 and p868 December 1959 The Railway Magazine
Birmingham Pullman (OS Nock) p492 July 1961 The Railway Magazine
Trans-Pennine Hull - Liverpool (OS Nock) p265 April 1962 The Railway Magazine
Cheshire Lines Manchester - Liverpool (OS Nock) p273 April 1962 The Railway Magazine
Inverness - Aberdeen and Huntly - Aberdeen (OS Nock) p341/2 May 1962 The Railway Magazine
Bristol Pullman (OS Nock) p492 July 1962 The Railway Magazine