UK Airport Parking

Travelling abroad for business or pleasure, the best way to commute to the airport is by your own car, which is probably the second most valuable item after your house.
The two things to protect your car against while you are away are damage and theft.
Damage:
Besides inclement weather, perpetrators and vandals have left many who return to their cars after parking them to hefty bill in damage repair.
At an airport damage to your car could be caused by people who are poor at parking their car or by negligent careless people who just do not care about others. If this happens do not expect to find the culprit even if the park has CCTV as it is unlikely that the authorities would be prepared to spend hours going through camera footage to help you find the culprit.
The only optimistic fact is that this rarely happens and the chances it could happen to your car are remote.
Theft:
Onsite car parks do not identify the owner of the cars when you insert your entry ticket to gain access and insert your paid ticket into the machine on the way out. Any thief who enters the car park with a stolen car to obtain an entry ticket could very easily break into your car, pay for the stay and exit with your car.
Best option; choose an offsite car park so that you know who to challenge for any damage to your car whereby at an airport it could be anybody.