@Mike G Price said:
Not being a GWR follower myself I can’t really advise on what kits you would need. Whatever you choose, any kit can be ‘converted’ by just substituting an EM wheel set available from the Trade Officer.
Or depending on the kit, just pulled out on the axles. Some have the plastic moulded wheels. Others are blessed with proper wheels, mounted on a standard 2mm axle.
I can’t remember who does what, but I’m sure that I’ve found “decent” wheels included in some Ratio and Coopercraft kits in the past.
As for “who does what”, that will have to wait for another post. As an Edwardian era modeller myself, I have a fairly comprehensive knowledge of what is appropriate for the period.