We are arriving at Heathrow and we need to get to Plaistow and we already have our Oyster .
Cards. I figure I can find the Piccadilly tube at the airport and board there. Do I just swipe my Oyster card through a reader and go through a gate to board the train? I thought I would transfer to the District Train at Hammersmith or South Kennsington stops or should I change trains at Action Town?. My question is how do you transfer trains? Do you just get off one and walk over to the other line? I don't want to have to pass through a gate again and pay another fare if I don't have to. Please walk me through this. New York City was a piece of cake so i hope London is the same.