Tens of thousands of people are paying fraudsters to sit their driving test for them, the BBC has learned.
The Driving Standards Agency (DSA) says imposters charge up to £500 and can have taken more than 200 tests each.
There are already cases reaching the courts.
On Monday, two men from Oldham, Greater Manchester, were convicted of obtaining driving licences by deception.
Shazad Akhtar, 34, was sentenced to 200 hours community service and ordered to pay £500 costs after pleading guilty to 22 counts of obtaining and attempting to obtain driving licences by deception.
The DSA, which gathers evidence before handing it on to police, has run 1,200 investigations into the activity so far.
Driving Miss Crazy
If you think this isn't happening in Canada, you must be crazy.
