Here’s the thing: whether you choose the coach or the train, always allow at least three hours between your arrival and departure. That’s longer than you’d think, but trust me—nobody wants to be that person sprinting through Gatwick with a shoelace undone and a passport flying out of their pocket. Immigration queues, security, and the chance of a train delay are real.
I once had to do this transfer with only two hours to spare. I was so stressed I accidentally bought a sandwich that was all pickle and no meat. Don’t be me. Give yourself that extra hour, and you can enjoy a nice coffee and a wander through the shops instead.