Hi, welcome to Just Answer. I will help you with your question.
You've a couple of options really.
Firstly, you could seek to involve the police, and see whether you or they can convince her to prosecute him or the assault etc. and then convince her to take steps to removing him from the home.
Secondly, you could seek to take action yourself directly.
This would be in relation to the neighbour causing a nuisance, with the loud noise and his (or their) behaviour, such as shouting, screaming etc. This would be under the laws of nuisance.
If you wanted to go down this route, then you could ask the County Court to grant you an injunction restraining them from doing anything that would cause a nuisance, such as playing the loud music, shouting etc.
A third option would be to speak with your local council and see whether they would take action for the loud music, this being a potential public nuisance, capable of affecting several neighbours.
Are you there?
Yes just finished reading your response - thanks . The neighbour in question rents the house - I do not know who is landlord is. Is there any way I can find out who the landlord is & approach them first then go for the options above?
Yes, if its rented, that's perhaps a little easier. You can do a search at the land registry, ww.landreg.gov.uk and find out who the freehold owner is. This search will give you an address for him.
. I will try this first. Then if that doesn't work I will try a more legal approach. Thankyou've for your advice.