When you live in London getting to and from the airport can often be very expensive. With the exception of London City Airport and Heathrow Airport none of the other airports are on the London Underground Tube system.
If you’re planning to fly away there are many firms offering car parking in or near all the major airports. As is the case with many things these days, the sooner you book your parking spot the less you pay. NCP run a lot of the parking that is based within the actual airport grounds. However there are many other companies which offer parking near to the airport and usually run shuttle services to the airport from their car parks. Most such companies also require that you leave them the keys to your car so that they can move your car if they need to.
You should check your chosen car parking company very carefully though as newspapers in the past have reported cars that were left with some companies as coming back damaged or having miles onthe clock which could not be accounted for.
Some airport also offer parking and sometimes discount for customers that book a hotel room for several nights.