Overview

• Drivers become liable for a fine the moment they exceed a posted speed limit by even 1 mph.
• The National Police Chiefs’ Council’s 10 percent plus 2 mph buffer is advisory only and carries no legal force, leaving enforcement to officer and area discretion.
• Modern digital speed cameras use radar or road markings to record vehicle speed, time, location, registration details and often capture images of drivers and passengers.
• Mobile speed units are deployed unpredictably, particularly in accident-prone zones where officers tend to enforce limits more strictly.
• The minimum penalty for speeding is a £100 fine, and drivers caught up to 10 percent plus 9 mph over the limit may be offered an accredited speed awareness course.