In answer to your request.
It can be found in OG 259 / September 2011 at the bottom of page 12 entitled 'Amendments sought for 2012 TE Register'.
This small article goes on to say that the next edition is planned for Spring 2012 and that information should be sent to:-
BRIAN JOHNSON, EDITOR, TRACTION ENGINE REGISTER, 24 PRIORY ROAD, ARUNDEL, WEST SUSSEX, BN18 9EN
or by e-mail ---
attractionenginereg@btinternet.com
Trust this will help.
Arthur