I haven't traveled by train to gatwick before so really nervous. Our train tickets and online info states: Norwich to Liverpool st, then central link to bank, then change onto northern line to London bridge, we then get a train from here to gatwick. Anyone done this route before and can offer advice, each of us will have 1 piece of luggage, I hate going down escalators (how many times will I have to do this?) Also when we get to gatwick does it go to north or south terminal? Any help would be great.