What site can i use to plan train route – london to hong kong?
The only way to do it by rail is to use the Trans-Siberian Railway, then train to Beijing and then to Hong Kong. I do not know whether a foreigner would be permitted to travel such long distances alone in China. The only website I know is http://www.seat61.com/, but you would strongly advise that you seek the advice of a rail oriented travel agents such as http://www.festtravel.co.