The route travels direct from St Pancras station to Amsterdam and Rotterdam in around three hours.
Hoera! Eurostar will run direct trains from London to Amsterdam, from 4 April 2018.
Tickets will go on sale from 20 February, with the inaugural service taking place on the same day.
However, return journeys will, for the time being, connect through Brussels while the United Kingdom and Netherlands governments complete an agreement on passport checks.
The service will hope to attract some of the four million passengers travelling by air between the two cities every year.
But Eurostar said that, with up to 10 trains a day from Brussels to London, the connection "should be quick and smooth". Therefore the market is the same size as it was when the London-Paris train launched in 1994 and points out that, since then, the market for travel between London and Paris has more than doubled. This new service was preceded by a comprehensive testing of the Netherlands high speed network and the building of Eurostar terminals in Amsterdam and Rotterdam.
Fans of legal cannabis and prostitution rejoice, Eurostar is launching a fast route from London to Amsterdam and prices start at £35. Passengers will see their time on board reduced by 17 minutes - from 2 hours and 5 minutes to 1 hour and 48 minutes.
"The UK and Netherlands governments are both working hard to find an agreement that will allow us to check travellers' passports before departure from the Netherlands, as we already do in most of our other destinations", the company wrote.
These issues mean direct services returning to London will not be in place until the end of next year.
The company hopes that a new link between London and Amsterdam will boost traffic.