Excuse if tittle poorly worded, spelling etc, I'm exhausted & have sat here later than my bed was calling me, due to promised phone call from PC who was to ring with an update on a complaint I have made - He was meant to Ring Between 10 & 11pm as he's now on Night Shift - still no phone call 
I Don't really know where to put this TBH, so hope this is okay as it is sort of AIBU...
Bit of Background...
We have new neighbours in the Pub next door They seem very friendly & make a big deal of wanting to be good neighbours re sound etc - going to have it as an art house type bar with a bit of acoustic jazz - improvement on previous so all sounds good - though a few things didn't add up - IE he professes to be an ex builder - but didn't know building regs & was sanding floors, drilling etc way past time -& all weekend - until we went round & gave him building regs
Several more minor, but loud & out of order incidents on the run up to this, including DH having a word with him & coming back declaring he was to drunk to have a conversation with, so no point or he'd be tempted to punch him & This Friday outrageously taking the P with a full live band thumping through our house & my getting so ill as a result of him by passing the limiter w that I flip & go round & read him the riot act not screaming swearing, not my style more school ma'am & taking no shit - see Mr polite & meek inside the pub & then he comes outside & becomes Mr Hyde again & basically tells me he'll do what he likes
So this Saturday we have a festival - I check with friends involved with running it weeks ago & the Pub next door is not involved & no street party - so we stay home- landlord tells me the same thing & that they are expecting a quiet one-
11am Sat - he has full set of Decks & Full Amps on the pavement practically outside our front door
Music BOOMING in every room of the house - the whole house is shaking - Police rang, no noise people to ring as too early
- thankfully our friend spots me in the street & tells me she's onto them already & has got hold of the noise people herself :)
Turned out they gave him a warning that he ignored - several calls to Police &etc later & we find out he has a TENS license until 4 am
& he;s ignoring all official warnings as he knows they are too busy to do anything - & on & on all weekend until late Sunday night - 1.30 am when I went to bed, squashed with 3 of us, sleeping pills & ear plugs
Anyway
I'm ranting - sorry 
I have an idea to try & get the noise & him ignoring his agreed hours recored on video on my camera - its so bad it even picks it up indoors :)- go out to my front doorstep to record the level in the street as it is mental - especially as every where else has now packed up & streets are clear & have him come racing over all aggressive, giving it large with Pitbull
over on MY doorstep in a very threatening manner,
I have my camera in my hand, which is switched onto video, but at that point pointing down as I'm just stepping out of my door & he mouths to me " you don't want to mess with me" - not spoken, but snarled without sound IYSWIM - but then goes onto to start snarling in my face in that same slow measured intimidating tone - "you don't take photos of me & my pub,
you need my p e r m i sssh i o n" - you speak to my l a w y e r - (which I know is bollocks)
body language is very aggressive & though I front him out - with - I've nothing to say to you - etc - I AM very shaken by this & do feel very vulnerable - though thankfully the adrenaline kicked in & I remember to swing the camera upward hoping to get him on video - which I did
- though missed his first mouthed threat, I got the rest - I realise with hindsight he didn't realise I was videoing & he mouthed the actual threat as a couple of other people in the street outside his pub 
lots more, but I'm sure your bored & confused enough by now 
I've never made a Police complaint like this before, & I don't feel they are taking it that serously - the community Police did arrive but that was about the noise - even though I had rang & reported it
- I was shaking like a leaf by that time & went to peices n getting indoors - I didn't wake DH, as he could loose his job if he thumped him - which after a few beers he might well have :(
I have seen him since & though he didn't speak he DID act in a threatening manner again, by slowing right down when he walked passed me & turning his head in my direction & glaring - I looked straight ahead & carried on chatting to DD as if nothing happened, but again felt shook up - especially as I'm ill aftr the wekend & needing to use my stick & VERY angry he did it in front of DD who noticed :(
AIBU, to think this really is an offence - him threatening on my doorstep etc & what would the proper legal term be & are the Police being slack - I have been in for an interview & left the DVD but it was very informal & the PC was meant to be letting me know if they thought the disc was evidence or not - I've had to chase & no return call promised toninght 
Thank You