Looking to book a few days in London. I wanted to go by train, but from our local station, the cheapest price is £120pp for a return and there is no way I'm paying that. We were hoping to go to the museum, but can't seem to find anywhere to park that costs less than £50 for 24 hours. Is this just the standard sort of price we will have to pay? The hotel we are staying at offers parking, but again it's £64 for 24 hours