Drivers caught by one speed camera have been fined up to £5.7million over three years.
The Gatso device in Bristol tops the list of the 27 that have snapped the most.
It caught 57,207 motorists breaking the 40mph speed limit on the M32, an average of more than 50 per day.
The 27 busiest cameras flashed motorists 579,000 times, potentially yielding almost £58million in £100 fines, according to Home Office figures.
Other hotspots included the M1, M4, M5 and M25, as well as London’s Tower Bridge, the Thames crossing, the A1081 near Luton Airport, Lea Bridge Road in East London and the A12 between Colchester and Ipswich.
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The figures show cameras caught drivers 2.2million times last year, up from 1.9million times in 2017.
