Not since 2009.
The DVLA were given new powers as part of the 2008 Finance Bill.
Until now, if a vehicle was not licensed or covered by SORN it could only be wheel clamped or removed by the DVLA if it was on a public road.
The amendment, which is buried in the Background Notes section of the bill, changes that provision and allows for clamping and subsequent removal of vehicles on land that is not 'Intrinsically part of a private dwelling'
Admittedly if the vehicle is SORNed and kept off a public highway then you should be OK.18. Clause 139 and Schedule 45 amend Section 29, Section 30 and Schedule 2A of VERA so as to permit enforcement of VED on vehicles parked off the public road except in places that are intrinsically part of a private dwelling or where a Statutory Off Road Notification has been made.
Section 45 of the Finance Act 2008
So - keep it SORNED or keep it in the Lounge....