British Trainz

I have come across this via Facebook - it is French-based but reputedly to be a search tool for those unknown KUIDs. Tried it, seems a good resource.

Link: http://www.trainzkuidindex.com/

Edit 29/12/15 - Free registration is now required to use the searcher.

It's been posted on the N3V forum as well, full details here http://forums.auran.com/trainz/showthre ... om-is-open
It works very well,cleared up half a dozen unfindable kuids for me.