The track plan I have used is from the late 1950s after the turntable was taken out. Earlier plans do show different access to the goods yard but photos from the late 50s/60s clearly show just the one point accessing the yard from the down line and protected by the trap point with a ground signal. On the up side the two sidings come off a headshunt/refuge siding which continues under Grange Road bridge. It isn't double track although it appears that way. One thing that has bothered me is that I can't see any ground signals controlling movements from the headhunt back onto the up running line although arlier photos show a 2 arm shunt signal. I have put a double ground signal in on my layout!
Ellesmere model railway club had an old 2mm model of Ellesmere but I am not sure where they are up to with it after it suffered some damage a while ago.
Derek Lowe's book on the Cambrian Main lIne has some useful views of Ellesmere.
Hope that helps and I am glad to answer any questions you may have
Many thanks for the reply, it just goes to show how one shouldn't presume! I thought layout was double track from the Wrexham/Welshpool junction toward Whitchurch, it never occurred that it was in fact single. Nicely explains lack of traps to the sidings behind the box
Have spent an enjoyable evening with Templot doing the required changes - oh the joy! Now just have to build baseboards and lay some track!
Will also try to get hold of a copy of the book for additional pictures. Have also mentioned a possible weekend away to the management to look at the old station building, fingers firmly crossed!
Thanks for the offer of help, hopefully you won't regret the offer!