If anyone is interested - a good site to look at for Gatwick parking is:

www.gatwick-parking-discounts.co.uk

Meet and Greet seems to be a cheap option.. we have done this at Stansted.. if you feel you can trust them to look after your car for you, but they usually have to have the keys anyway and might need to move your car around the car parks if you leave it.

Oh! if only we had the space we could earn a small fortune and it would pay for our holiday in Arillas!