Just had a play with Templot using a Bing map as a rough guide
Nothing in stone, may need compressing. Do I keep the 2 road shed or go for a single road shed. I have used B8's except for the curved turnout, though I may just vary the sizes just to be echonimical with the common crossing packs
As I plan in in a preservation era, as I can use locos from both GWR and SR, also varied liveries and use locos which perhaps would never had been used.
As for the slip (which is a diamond just for speed of design) do I have a single, double or perhaps a Barry slip ? or just build the turnout as is with 2 catch points in built. Still the idea will be to build the trackwork between the signal box and engine shed
The plan is about 10' in length, this I may need to compress though