I don't think NYMR run any specially-modified coaching stock for modern requirements, but I'm probably wrong.Do the modern disability standards apply to a heritage railway running in to a Networkrail station? (NYMR, Spa Valley, Cholseley, Isle of Wight, Strathspey, Peak rail and others)
This website may be of some use:
https://www.rssb.co.uk/Standards-an...try-Standards/Heritage-rail-vehicle-standards
-Peter