I'm sorry, I was quoting from another who said that this was in the index of 'Railway Signalling and Track Plans by Bob Essery(Pub Ian Allan).
The actual quote reads, in the Preface, "assistance received from Richard Chown , who has allowed me to quote from his informative paper 'The Board of Trade Requirements', published by the Scaleseven Group in 1997, which provided me with the idea behind the theme of this book."
So, we now have the correct title and an author. Anyone with further info please?
Thanks Ian