Airports
There are five major international airports that serve London
1) Heathrow: To get to Central London there is the Piccadilly line or also the Heathrow Express that take's you to Paddington. But my advice is the Undergound, a lot cheaper and not much difference in times.
2) Gatwick: To get to Central London there is the Gatwick Express which takes you in to Victoria which is the busiest mainline station in the country, where you can connect to three different Undergound lines.
3) Stansted: To get to Central London there are coaches and also the Stansted Express which takes you into Liverpool Street, which is in the center of the City Of London, and can connect to five different Underground lines.
4) Luton Airport: To get into Central London there is the Thames Link service which is only 30 minutes to either London Bridge, Black Friars or Kings Cross, Kings Cross is the best choice as you can change to six different Underground lines.
5) City Airport: Situated in the Docklands, it is accessible by the Docklands Light Railway (D.L.R)
Any Questions email John