we recently did the QM2 from southampton., there were 13 of us., some caught the Orient Express down which is put on for cunard., It was pricey but some had the travel agents include it in their deal. We were quoted $usd300 to do it. It arrives directly beside the ship on the dock and takes 2 1/2 hours...you get an amazing lunch. There is also a normal train., cost about sterling 30pounds ., it arrives at the train station adn you have to then get across town to the ship. The groupof 4 who stayed togther in london had a limo down., it was a great trip with champagne etc and we arrived right beside the ship at the dock , took about 1 1/2 hours,,,maybe 2. It cost sterliing90 pounds and divided between 4 was a good deal.