Re: legal advice.
you could try "invasion of privacy",.or could try "being a public nuisance" . Maybe a word to your local police community officer or even your environmental health officer in the first instance, or just have a word with the parents.
You have several routes you can take. If the Sprogget is below prosecution age then the parents could be prosecuted instead.
If it annoys you then you have every right to complain, how far you take it is up to you.
It all depends on how well you get on with the neighbours.
A bit more expensive way is to get a solicitor to write to the parents.
I had to take this last method when I first purchased a boarding kennel. A person living about 400 yds way kept ringing to complain about the noise AS solicitors letter about the harressment they gave me bought a response of the environmental health officers turning up from my and their council
The end result was that the complainant was given a ticking off and the occassional barking was at an acceptable level and only when people came.
It stopped the complainant dead. In the end if it annoys you ,you don't have to tolerate it.