So there would still be some restrictions about who gets on the train?
I don't think it's been clearly defined - in Schengen I could just walk onto any train on any platform near enough, no checks. A bit like Virgin Trains today for example (with no barriers).
So we either have checks in this scenario or we don't?
The difference with ferries and planes in particular is the checks on departure and no walk-on ability. This implies none of that, so the first encounter would be at STP.
I don't think it's been clearly defined - in Schengen I could just walk onto any train on any platform near enough, no checks. A bit like Virgin Trains today for example (with no barriers).
So we either have checks in this scenario or we don't?
The difference with ferries and planes in particular is the checks on departure and no walk-on ability. This implies none of that, so the first encounter would be at STP.