How do I book tickets to London Thameslink stations?

If you're coming in from the North or South to one of the London Thameslink stations (St Pancras International, Farringdon, City Thameslink, London Blackfriars, London Bridge and Elephant & Castle) and want to book a ticket, just select "London Thameslink" as your destination when you book. This way you'll see the full range of fares for your journey.