Diadem Files
About Diadem Files
The concept of compiling historic locomotive workings is a challenging task, especially when some of the records are well over 60 years old and original notebooks are difficult to acquire, let alone read. In 2009 I decided to commence this task, with help from long time railway enthusiast Mike Rowe.
15 years later The DIADEM files now contain well over half a million records covering the period from 1960 to 1995. However midway through this exercise it was decided to limit the research to 1960 to 1977 so as not to clash with other similar websites such as Railgen, which expertly cover more recent years. Thus the monthly files available on this website are limited to around 310,000 records covering what were basically the diesel-hydraulic years.

So far over 150 contributors have provided information for which I am very grateful. This ranges from half a dozen records from some to over 90,000 extracted from the notebooks of the late Bob Stone, an Exeter stalwart.
Other major contributotrs are my good friend Roger Geach, the late Adrian Curtis, with whom I shared notes and photographs, Sean Greenslade , Ray Rendle, the late John Frood, Andy Braund, Geoff Lendon, the late Phil Weaver, Mike Rowe, Dave Mitchell who assisted with the records of the late Chris Parsons, Martin Street, Mark Alden, Gary Morgan, Keith Courtney, Richard Browne and Roger Hill. My own observations are also included.
The initial intention was to record only West Country records but it soon became clear that turning away interesting information from other regions would be a mistake. Having said that, 80% of the records relate to West Country observations, 135,000 of which are diesel-hydraulics. Steam observations are included too.
The aim of the site is to provide information simply to browse or to assist in researching photographic records, journey details or days out spotting.
100% accuracy will never be achieved in researching notebooks up to 65 years old which has required around 25 million keystrokes but every effort has been made to provide correct information.
I hope that you enjoy browsing but please respect the request of several of the contributors that they are not copied for private use or published elsewhere.
Steve Marshall
Portugal