Nope. Any car parks, roads, etc. that the public have access to can now be considered part of the highway for road traffic enforcement purposes. Anyone sensibly using an empty car park for a bit of skid pan practice can be done for dangerous driving or any other such offence. People have also been done for not being insured when having a go of other peoples vehicles in car parks or for not stopping at a pedestrian crossing in one.
As well as that, if someone sees you doing it and reports you to the police, you can be warned and then, if on a second occasion, a separate person sees you doing it (or something else) and reports you, you can be summararily convicted of using a vehicle for anti-social behavior and can have your vehicle confiscated for a couple of weeks (of course, you will have to pay for it being towed and stored before you can get it back!)
SteveW