An example of a light which may constitute as a statutory nuisance is where a light is spilling on to a property when curtains are closed, causing a neighbour's rooms to be lit up at night. There are certain exemptions that prevent certain lighting from being a statutory nuisance (e.g. street lights).
Where possible, try talking to your neighbour about the problem in the first instance. Download a suggested letter (PDF) to send to your neighbours. You can then alter and amend accordingly if you are suffering from nuisance as a first step/alternative before contacting us to formally complain.
As a householder, you can avoid causing a light nuisance by making sure that you:
Do not fit unnecessary lights
Do not use excessively bright lights; a 150 watt tungsten halogen lamp is quite adequate; 300 or 500 watt bulbs are too powerful for domestic security lighting
Do not leave lights on when they are not needed
Consider controlling lights with passive infra-red detectors, ensuring that they are correctly aligned and installed. For a porch light that is going to be left on all night, a nine watt compact fluorescent lamp is normally adequate
Re-angle or partially shade lights so that the light only falls on the area that needs to be illuminated