This Gatso speed camera is located on M25 - Junctions 23 and 27 near Waltham Abbey in Essex, monitoring unconfirmed traffic with a 70mph speed limit.
The section of the M25 between Junctions 23 and 27 was recently upgraded to a "smart" Motorway with all lane running (official completion was November 2014, though J23-J25 opened ahead of J25-J27). Speed limits, lane closures and other information are displayed on a mix of both gantries and variable message signs.
All speed camera locations on SpeedCamerasUK.com have been submitted by UK motorists. If you can improve the information above - or add a photo - please use the buttons below.
Many drivers are caught at speed camera locations like this after misjudging the transition between speed limits or failing to notice the camera in time. A speed camera detector gives you advance warning before you reach known fixed and mobile camera locations.
When speed limit shows on the variable signs the camera system is instructed to start enforcing the enforcement speed (i.e.. the limit + threshold).
The system is essentially an unmodified radar GATSO system (the type you're used to seeing already) with additional hardware and software for the variable speeds.
A speed camera detector alerts you as you approach known fixed and mobile camera locations like this one - giving you time to check your speed before you reach the enforcement zone. Speed camera detectors are completely legal in the UK. All detectors are available from ActiveGPS.co.uk.
If you have been caught speeding at or near this location, the guides below explain what happens next, what your options are, and how the penalty system works in the UK.
This camera is a rear-facing Gatso - one of the most common types in the UK.
If you saw a double flash, it likely recorded your speed.