If you are coming to London from France (Lille, Paris) or Belgium (Brussels) you will arrive on the Eurostar at St Pancras International. Taxis are available across London or to other train stations in the capital for access to other parts of the UK. If you book in advance a cheap taxi will be there on your arrival to St Pancras.
Formerly Eurostar was location at Waterloo station. Now its located in St Pancras, which is adjacent to Kings Cross station too. Book a taxi to the Eurostar from across London for a smooth journey to Paris, Lille or Brussels.