He has parties/gatherings with tons of people a few times and week and other neighbours including myself have gone round to tell them to stop the music and quiet down and most of the time they just say no and shut the door in your face.
And he would have to be seriously retarded if he was thinking that no-one else can't hear the music at when most of the time it doesn't finish till 5/6 in the morning...
I'd defanatley say he is ***** schum.
It was abundantly clear he's ***** scum from the first post you made. I am quite familiar with this kind of behaviour and it stems out of pure and vacuous inconsideration.
I would be questioning your response in terms of passive acceptance with regards to the rubbish etc. It's certainly conscientious to take the moral high ground and not rise to that kind of behaviour but in essence you're pandering to passive bullying allowing such behaviour and to deal with the mess yourself in reality is passive submission. If the guy has a massive dog and behaves in this way he's probably looking to create an aura of intimidation so that he doesn't have to rely on doing it himself; in other words unlike his dog his bark is possibly worse than his bite.
The reality is the responses you've received from the police and environmental health are as expected; there really isn't much they'll do. Definitely worth speaking to CAB. Another consideration to make would relate not just to the terms of your tenancy, but the terms of his.
For example, is it likely he privately rents, owns, or is his property managed by the council/housing association? If he owns the property, then there isn't much you can do. If he rents, then most assured shorthold tenancy agreements hold a clause which cites that audible noise outside the property between the hours of 11pm and 7am is unacceptable. To behave to the contrary would be in violation of the agreement which would rend it null and void.
If it is a housing association property (which I highly expect), then not only does he violate the same clause as in the tenancy agreements and they would also have an obligation to act on the grounds of the environmental health act.
In either scenario, it's imperative you address a complaint either with the council or the estate agents/landlord involved in his tenancy.
Whilst finding this out you'll also want to take a look at your own contract. I'd expect yours has clauses about comfortable standards of living and what the landlord is expected to provide. Another issue to raise is that if you have a clause about audible noise as well it's not fair to be expected to deal with if from another party in your vicinity, so I'd certainly be looking to cite grounds for early termination of the tenancy.
In either circumstance, your best option is probably to try and move out earlier and planned. Then you can come back and defecate on his path, plant chicken and fish carcusses all around his walls, then smear your own rubbish all over the place
