Consider having mediation with your neighbour
Mediation can help you to come to an understanding with each other if possible, when you seem to have reached a stalemate.
If discussing the problem with your neighbour leads to a stand-off, mediation may help. The purpose of mediation is to cut through misunderstandings on either side about what the problem is.
Contact your neighbour’s landlord to let them know about the problem
If your neighbour is renting the property it is likely that there is a tenancy agreement prohibiting antisocial behaviour at the property. If there is a problem, you should raise it with the landlord early on, but not before you have first raised it with your neighbour directly.
Approach your local authority for help
Your local authority will be able to take preventative action against your neighbour if the antisocial behaviour does not stop.
If your neighbour breaks the law
The police will have powers to intervene and either prosecute or threaten criminal sanctions if the behaviour carries on.
Consider bringing a civil action in the courts against your neighbour
If you have not been able to resolve the dispute with your neighbour yourself, nor by appealing for help to your neighbour’s landlord, the local authority, or the police, then it may be appropriate to bring a civil claim under the Protection from Harassment Act or for common law private nuisance.
In some cases, it may also be possible to include a claim for compensation, but this will be subject to your neighbour’s ability to pay, and you will not normally be able to recover the costs of bringing your claim.