There's the Rudyard Lake stuff, however the locos sink into the track so can't tell what gauge! it's less than 2ft though. Edit: Googled it, it's 10.25" Might be some track that fits The Rudyard stuff, possibly early mike10 as his NG tracks were the wrong height and stuff was made to fit.
15" stuff? Someone asked me to do 15" track which I did, just can't remember who it was though. Northern Rock plus Tender seems to be the only thing on the DLS
There is 10.25" track and other non Rudyard rolling stock, might be better off trying that?