Airport Meet & Assist now take pics of your car after they take it from you....and I now always take a pic of the mileage and ask them how far their compound is.....
Back from Dubai recently and meteor brought my car back with a slight knock to the front bumper, so am waiting for them to look into it....
I have stopped using Valet at Westfields as it's £10 plus the parking for the duration.....not cheap!!