Need some thoughts and advice. We are cruising from London (Southampton) in May. We plan to spend a few nights in London before we sail. What are the best transportation options from Heathrow into the city, and then from the city to Southampton? I now it is a pretty good distance to the port. I've found what I think is a reasonable deal for a hotel that includes transportation to the airport but they will only return to the airport. The cruise port is not an option.