Many of the most important airports in the UK such as London's Gatwick and Heathrow or Manchester's airport have more than one terminal with departing planes, which means that it's vital you check what terminal you are leaving from and getting to before you decide to park your car in the airport. Getting the wrong terminal or not being sure what terminal you have to use will make you lose lots of precious time, up to half an hour, before or after your flight, especially if you have to park your car.
