What are the UK laws regarding home security lights?

I have a security light in my back garden but the people who live in the house behind mine are complaining about how bright it is shinning in their house late at nite, does anybody know if there are any uk laws regarding this situation?

There is remedy for your neighbours under the law of tort for nuisance. Interference with enjoyment of land is judged subjectively by the courts. Often needs to be regular nuisance.
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i.e a cockeral that awakens the neighbours with its cock-a-doodle-do, would be nuisance and the claimant would have a case against the neighbour for interference with the use and enjoyment of their land. So, if the lights disturb the neighbours regularly then your neighbours have a case for nuisance.

If malice, intentionally letting the lights awaken neighbours, then will be seen by courts as unreasonable and definate case against you

Your neighbours can then seek an injunction , an injunction must be granted unless injury to neighbour is trivial and can be compensated by damages, Kennaway V Thompson

Best advice, get the lights dimmed, repositioned, changed. You care enough to post the concerns, you sound a good guy. Sure you can compromise somehow.

Forget laws. What about common courtesy? If it's affecting your neighbours, surely you shoud do something about it.

Can't you angle it further down, or alter the sensitivity on the setting, so it doesn't go off so easily.

Why not talk to your neighbour and try to sort this out amicably? Stuff the law, why not just do what's right.

As far as the law is concerned I don't know, but as an electrician I can assist you.
You can adjust the angle of the light to just fit into your garden space, best done at night. If you have the 500 watt halogen type then switch the light on but DON'T touch the glass face or your skin will stick to it. Adjust the angle of the fitting by looking at the shadow that it casts over your area. This will help keep your neighbours happy. If you have the PAR 38 type the twin lamps then swivel them till they suit.
A proper electrician would not have fitted it to shine into your neighbours.

no laws , but a recommendation is , make sure your light is facing towards the ground , that way it will not blind your neighbour, but will still light up your area, even try a smaller light, or make sure the sensor comes on only if someone is in your area only , plus set the seance for say 30 seconds only, this is plenty time if you have security cameras as well .
now with regards to cameras their is laws , and that involves you are only allowed to have your cameras looking into your own property , and not other peoples property .
that is just a rough layman's answer , but your local police station can give you a full and proper answer .
NOT WORTH FALLING OUT WITH A NEIGHBOUR FOR, for neighbours are your best security you can have.fall out with them , THERE SEE NOTHING , keep friends with them , THERE SEE EVERYTHING.
hope my answer helps.

Don't know if there are any laws but this is not a law thing it should be resolved as a matter of courtesy to your neighbour,There is nothing wrong in having a security light but its brilliance and direction should be considered.I presume the light is on the back wall of your house and shines down your garden to the house behind.As lights can come on frequently with cats etc setting them off I can imagine your neighbour being annoyed at a bright light suddenly entering his house.Can the light be repositioned?Ideally mounted at the bottom of your garden facing towards your house The sensor would still cover the same areas,you would still get the protection and the neighbour would not be disturbed.This would appear to be the sensible civilised way to overcome the problem rather than talk about law,You should do what is neighbourly not what is lawful or not. Isn't it much nicer to be on good terms with everyone.PS I had a similar problem and resolved as described above.I had to run electricity yo a garden shed and mounted the light on that. My problem was a family of hedgehogs setting it off in the late evenings.

You must not be a nuisance to your neighbours.
ie If your lights shine inti their bedroom all night they have course for complaint.

Why bother about law courtesy provides the answer so talk to you neighbour if you haven't fouled up the relationship completely, or try to if yoy have. after all it is best to be on good terms it makes life pleasant

Hiya, simple solution is to adjust your lights so they only point directly into your garden. Had similar problem with my neighbour, but when he explained I adjusted mine.

there isnt anything they can do about it except get heavier curtains for their windows

There are no laws reguarding this, however if your neighbours want to be funny about it they can contact the local council and ask them to intervene, the council will no doubt issue you an order for you to remove the light or slap you with a big fine, just because they can.