There's one like that running near where I live. Once a week, at about 9.30am on Friday mornings, a single train runs from Stockport to Stalybridge. There is no return service back the other way. Apparently it has just enough railway enthusiasts use it to keep it open. There's also a really good pub at Stalybridge station but 9.30am is a bit early for beer. https://en.wikipedia.org/wiki/Stockport_to_Stalybridge_Line
There's one like that running near where I live. Once a week, at about 9.30am on Friday mornings, a single train runs from Stockport to Stalybridge. There is no return service back the other way. Apparently it has just enough railway enthusiasts use it to keep it open. There's also a really good pub at Stalybridge station but 9.30am is a bit early for beer. https://en.wikipedia.org/wiki/Stockport_to_Stalybridge_Line
Stalybridge Buffet Bar Know it well, used to live in Ashton.