Part of my three months global interrail I will be based in Northern London, close to suburban Mill Hill Broadway railway station, served by Thameslink. From there, for instance, I have a direct connection to Tate Modern. It has gates, like many other stations in and around London. You can't open them with your ticket, so you need railway staff.
(I do not mean the tube stations, were interrail is not valid.)
My question is: does anybody has experience with such railway stations, where there any difficulties? Was there always staff to help you in or out? Do they know interrail is valid?
I'm a little bit worried, because I'm from the Netherlands, where we have, in my opinion, quite a hostile gate system. And in another topic somebody mentioned problems getting into the Elisabeth Line, where interrail is valid. On the other hand, traveling through London before (with Oyster card), British staff was always friendly, very helpful and they usually managed to make me happy.
Thanks for experiences and tips!