"There's a 'ghost train' service running in and out of London Paddington. It is rarely advertised and attracts few riders. It runs to and from West Ruislip, once a day, on weekdays only.I'm sure there must be someone who "collects" these things. And gets annoyed when the route is changed and they have to go back again.
"This 'parliamentary' train is a little-known service kept open only to stop the lengthy process of shutting the line down completely due to lack of use. This means that if you ever have a need to get between Paddington and Ruislip at somepoint mid-morning, there is a train service that just might be suited to you."
Travel Here's some really excellent reporting from The Londonist about one of the capital's "parliamentary" train services:
Posted on Wednesday, November 23, 2016