I have two days left on my interrail and have used bioth my inbound and outbound days to the UK.
If I want to go to Paris, I understand that I have to get myself to St Pancras. But can I use my remaining day on the Eurostar. I know that I will pass UK border control before boarding the train, so technically the train is not in the UK, but what are the interrail rules? Is there a definitive answer?