On board a real-life 'ghost train'

Help

You won't see them every day, and they rarely run when you might actually want to use them - but they're beloved by rail enthusiasts.

"Parliamentary" trains - also known as "ghost" trains - are strange services which often run just once a week and in one direction.

They exist in order to keep certain lines open, because without them the train operators would often have to close the route - something which costs time and money.

But tracking these trains down - and taking a journey on them - is the particular passion of a select group of ghost train "hunters".

BBC News went along for the ride.

Video produced by Dan Curtis.

BBC © 2014 The BBC is not responsible for the content of external sites. Read more.

This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.