We're on Twitter and Facebook - stay connected and get in touch.
Simply like us on Facebook and follow us on Twitter to get live travel updates and our latest offers. You can also ask a question or leave comments for our dedicated team.
Social media makes it even easier to find out about your journey or get in touch on the go, from your smartphone or tablet.
Follow @GNRailUK (Great Northern) or @TLRailUK (Thameslink) to get live travel updates and advice from our dedicated team. You can also tweet us to ask a question or leave a comment and we'll do our best to respond.
We are open 24 hours a day 7 days a week, with the exception of Christmas and Boxing Day when the train service is not running and therefore the Twitter account is closed.
Like us on Facebook for updates about our latest special offers and promotions. We've got dedicated pages for Great Northern and Thameslink. It's the place to chat about our latest special offers, promotions and competitions.
We're not always around at weekends, but we always try to respond to posts within a few days. If you're looking to discuss the train service itself - or need a faster response - you're better off contacting the experts over in our customer services team or tweeting us.