Indeed! Travelling last-minute, you could even be 'quids in' by popping over to the continent for an afternoon so that you'd be eligible for an Interrail ticket

Indeed! Travelling last-minute, you could even be 'quids in' by popping over to the continent for an afternoon so that you'd be eligible for an Interrail ticket: 4-Day Interrail Global Pass, Adult passenger: €283 Eurostar seat reservation (any destination) x2: €060 = €340 (~£288) Nearly fifty pounds less than the price of two Leeds <-> London Anytime Single fares, £331.80! And since hotel rooms in London aren't cheap either, you might even save money by staying the night in Lille rather than London. Kings Cross is part of the same station complex as the Eurostar departures at St. Pancras, so you would save money, spend less than three additional hours travelling and not even risk getting rained on. This is Hacker News, but even still, I feel kind of icky suggesting a 500-kilometre detour to save money on a journey between two British cities no further than that distance from each other. How I wish we could just have a British version of the Austrian 'climate ticket' and leave all of our inscrutable rail fares behind us!