✔ 最佳答案
London underground waterloo is the same as Eurostar waterloo station. However, you need to get out from the underground to the ground level inside the train station and then follow the sign to eurostar entrance.
From Victoria to Waterloo is to take either circle (yellow) or district (green) line to Westminster (2 stops), then take jubliee line (silver) - 1 stop to waterloo. It will take about 15 mins. If you have luggages, you should take the lifts rather than escalator.
Hope this helps.
參考: Myself - Live in London.