journey will be far from seamless. All passengers will take a Thalys high-speed train to Brussels. Here, they clear security and passport control, before boarding a Eurostar service — perhaps the very train which has run from Amsterdam to -- But Mark Smith, the rail guru known as The Man In Seat Sixty One, told The Independent: “This is a massively important air route, and most importantly high-speed rail can get you there in under four hours. And these days, if you can go from the centre of one city to the centre of another city in under four hours, then you can start competing for both