Police stopped and checked scores of vehicles today as part of a campaign to track down rogue traders.
Officers used the force's Automatic Number Plate Recognition system, (ANPR), to read registration plates of hundreds of vehicles.
The technology cross references the registrations with the police and other national databases.
As a result, they stopped 74 cars, vans or lorries to carry out a series of checks on the vehicles and their owners.
Organisations such as HM Courts, Leicestershire County Council's trading standards team and HM Revenue and Customs were present during the operation in Lutterworth Road, Dunton Bassett.
Ten drivers were issued with formal warnings that they could be fined or prosecuted for offences such as having no MOT, defective tyres, having no registration plate and not having a valid licence for the vehicle they were driving.
Police also arrested a motorist who was at the wheel while disqualified. His van was also seized.
A total of 63 vehicles were stopped and tested for whether they were running illegally on red diesel. None were.
The operation, which ran between 10am and 2pm, was part of a week of action by UK police forces to crack down on rogue traders and doorstep conmen.
On Tuesday, a similar operation was staged in Hinckley Road, Braunstone, Leicester.
Detective Chief Inspector Richard Ward, who oversees Leicestershire Police's campaign to reduce burglaries, said: "Due to the transient nature of the offenders, roads policing presents an excellent opportunity to track down those who would do harm.
"It is important to deny these individuals the use of the roads and disrupt their criminality."
