Hi there, we are a couple in our 50s, arriving at Gatwick from Italy at 6:30pm on a Monday in June. The Gatwick Express train seems an expensive way to get to London. We are staying in Warren Street. I don't want to spend all night getting there, can anyone advise the best transport? I thought the Southern Trains service to Victoria, change to tube to Warren Street on Victoria line may be the best option - do you agree?? If I get a Pay as you Go amount on an Oyster Card, could I use that for the journey or do I have to buy a ticket for the train at Gatwick?