Speed limits are in place for a reason. You must not exceed the maximum speed limits for the road and for your vehicle. Street lights usually mean that there is a 30 mph speed limit unless there are signs showing another limit.
The speed limit is the absolute maximum and does not mean it is safe to drive at that speed irrespective of conditions. Driving at speeds too fast for the road and traffic conditions can be dangerous. You should always reduce your speed when:
Stopping distance is affected by a number of factors, including weather conditions, load, condition of the road surface, tyres, brakes, driver skill and design and type of vehicle.
The information presented on this page is for general guidance only. Please refer to the Highway Code for more information https://www.gov.uk/browse/driving/highway-code
The term "safety cameras" bundles "speed" and "red light" cameras. There are 640 camera sites in London - only 350 are speed cameras; the rest are red light cameras.
The operational strategy is designed to target sites with the worst casualty records. Some sites have already achieved significant casualty reductions and it is not intended to remove them. These sites are clearly effective in reducing collisions and their removal may result in the problem emerging again. Cameras at such sites have an important ongoing deterrent role.
The strategy for London also involves the use of five dedicated mobile camera enforcement units in the first two years. These are deployed at locations identified as having a speed related collision history and which have no camera coverage at present. The mobile units are clearly marked and police officers wear high visibility clothing.
In the City of Westminster there are 8 fixed speed cameras and 24 red light cameras. To see where they are located, visit the Transport for London website.