Self-balancing 'hoverboards' which have been increasingly popular this year are actually illegal to ride in public, according to official guidance released by the Crown Prosecution Service.
The devices, which start from around £250, are a hybrid of segways and scooters. They have seen a boom in sales, with many celebrities spotted using one in recent months.
Although dubbed 'hoverboards' they are on two wheels and are powered by balance. Users lean backwards and forwards to control it - but can be tricky to use.
There has been a surge in enquiries to the CPS about the devices. One question was: 'I have a self-balancing scooter and I want to ride in on the public road, is it legal for road use?'
The CPS replied: 'No. vehicles must be approved via European Community Whole Vehicle Type Approval or Motorcycle Single Vehicle Approval in order to be licensed and registered.
'Self-balancing scooters would not currently meet the requirements of these schemes so are not legal for road use.'