I'm thinking of taking the train from Gatwick airport to Cheltenham Spa. I'm wondering how much time should I allow to make it to the train platforms? There's a limited number of train connections, if you don't want to travel via London. I'm trying to avoid changing a lot between trains and underground, because I will be travelling with a big suitcase.
My flight will be arriving to the south terminal at Gatwick, I will have to wait for my checked-in baggage. I'm an EU citizen and I'm flying in from a Schengen country.