What legal rights you have if neighbour's security lights are 'intrusive'

The glare of a neighbour's security light shining at night is something most of us have encountered at some point. These fixtures are commonplace across UK homes and serve a genuinely practical purpose in protecting households.

Inevitably, however, such lights can activate by mistake - triggered by a passing animal or some other harmless cause. This can prove irritating for nearby residents and may even disrupt their sleep, and officials say they are a 'regular source' of complaints from UK householders.

What many UK residents may not realise is that they actually have legal rights in this matter worth exploring. The issue is addressed in legislation under the Environmental Protection Act 1990.

The act stipulates that local councils are obliged to investigate complaints regarding artificial light emanating from premises where it could be classified as a 'statutory nuisance'. Security lights are among the types of illumination covered under the act in such circumstances - alongside decorative lighting of buildings or landscapes, laser shows, light art and sports facilities.

Floodlights on an external brick wall

The legislation - which is freely accessible online - states that when examining complaints about potential light nuisances, councils may consider one or more of the following: the timing of the issue, whether it interferes with enjoyment of a property, any potential health implications, whether it occurs in an urban or rural setting, its duration, its frequency, and its likely impact on a reasonable person (unusual sensitivities are excluded from consideration).

There are no fixed thresholds for light to be deemed a statutory nuisance. Special provisions exist for businesses, trade, industrial and sports club premises. Additionally, the act does not cover airports, harbours, railway premises, defence installations such as army bases, prisons, premises occupied by visiting armed forces, tramway premises, bus stations, public transport operating centres, goods vehicle operating centres and lighthouses.

According to the legislation, for something to qualify as statutory nuisance, it must either unreasonably and substantially interfere with the use or enjoyment of a home or other premises, or cause injury to health or be likely to cause injury to health.

A further policy paper released in 2013 looked in further depth at the issue of security lights among other matters. It said: "A Defra research project looking at artificial light nuisance complaints found that outdoor security lights were a commonsource of complaints to local authorities. The project concluded that this is likely to bebecause security lights can be very intrusive, especially when poorly designed, directed, operated or maintained."

The gov.uk webpage on the 1990 act states: "If they [the council] agree that a statutory nuisance is happening, has happened or will happen in the future, councils must serve an abatement notice. This requires whoever's responsible to stop or restrict the light. The notice will usually be served on the person responsible but can also be served on the owner or occupier of the premises. Natural light is not covered by statutory nuisance laws."

An outdoor light fixture at night

One resident wrote to the Times newspaper in 2025 to raise concerns about their neighbour's LED lights. They said: "The house owner opposite me has installed a very bright white LED light on his back wall that shines directly into my sitting room."

The complainant explained that the neighbour was unwilling to discuss the matter beyond suggesting they close their curtains. Ed Cracknell, a partner at law firm Russell-Cooke, responded in the newspaper with guidance.

In that scenario, he said: "My guess is that the light is motion-activated and, depending on how sensitive it is, it may be triggered by pedestrians, passing cars, animals and other movement. If yours is a busy road, this could happen constantly and stay on for some time afterwards."

Ed advised the complainant to keep a log of the times the light activated, along with photographic evidence, and recommended writing a letter to the neighbour explaining the impact it is having and requesting that adjustments be made. Ed suggested seeking advice counsel, but warned that such matters can prove both costly and time-consuming. He added: "Disputes are disclosed on a sale of the property so there is a risk of prospective purchasers being put off."

The Barristers Inc website says: "Not all light is a nuisance. The legal test is whether the light is unreasonable in the circumstances. "This means it must be more than a minor annoyance or a personal sensitivity. The light's impact must be serious enough to affect the comfort and enjoyment of an average person in the same position.

"For instance, if normal curtains or blinds can effectively block the light, it is unlikely to be considered a nuisance." It notes that in order to determine whether a security light constitutes a legal nuisance, a court or local authority will weigh up several key factors. There is no single legal definition - the matter is resolved on a case-by-case basis.