Visit the official Web site for South Eastern Railway, the rail carrier that handles service from London to Dover. Research timetables and to see which combination of services is best for you.
Book your travel online by using the reservation section of the South Eastern Railway Web site. You can also book train travel from London to Dover by calling Rail Europe at (888) 382-RAIL or by visiting the link below.
Contact a local travel agency in London to assist you in making reservations, especially if you're concerned about missing a detail or two.
Buy your tickets at one of the three train stations (London Bridge, Charing Cross and Victoria) that offers rail travel to Dover. Use either the manned ticket counters or the automated machines.
Consider an upgrade to first-class accommodations if you need to use a laptop computer or other portable electronic device. AC outlets are much less common in second-class carriages.
Choose a restricted ticket, which is non-refundable and non-exchangeable, if your travel plans are set in stone. The money you will save over a flexible type of ticket will just about pay for an upgrade to first-class accommodations.
Inquire about travel connections, via boat or rail, into continental Europe once you arrive at Dover Priory station.