First off, thanks to Gilliganuk & busman for your prompt response. Much appreciated but sorry, change of plan now :(
My in-laws are now flying into London Gatwick and want to stay the night in London Central. What's the best 3-star hotel to stay & how to get there from Gatwick, considering they have luggage with them?
Next day, they've a cruise to board in Southampton. What's the best and cheapest way to get to the cruise (Queen Mary II) port?