Hello lovely ladies x
Thanks for all your lovely comments, hugs and kind thoughts 
Well my RL support turned up yesterday in droves and it was all very hectic, up-dating everyone, dr's, solicitors, x-rays etc I didnt get a minute to myself, lovely and I slept better last night!
Solicitor was fab- recommended by a close friend, she has started my divorce proceedings (now I have evidential grounds to)
confirmed access to be denied until either court date or psych analysis on Ex
he will need to obtain court order to see DS's & she says it's highly unlikely he will get that till above done anyway.
she will arrange non molestation order after court.
Also we discussed how contact could be arranged in the future (she says it's not something I need to worry about for at least 6months) she recommends hair strand test which will show pattern of Alcohol consumption over 12 month period 
full psychiatric assessment and steps taken to address any issues (alcohol, depression, anger) and supervised contact via a CC (NOT in-laws)
Explained to me that contact is for THE CHILD not the parent and Ex would need to prove contact is an enjoyable experience for them, which isn't likely if he's as bad as MIL says at the moment.
I felt it went really well, she is a DV specialist & I definitely qualify for legal aid.
On the flip side the In-laws have clearly lost the plot and have rung my Cousin several times over last 2 days re contact.
They seem fixated on this being a fix-all problem, poor cousin is trying to get upto speed on everything regarding history over last 3 years and acting as my advocate, protecting me, playing with DS's ALL DAY! (it's lego city in my front room)
I think he's finding it hard to stay civil to MIL (always her that rings him) but he's followed my request of not telling me everything reg Ex, only what we need to know - Ex has had at least 3 Dr's attend him (why???)
I've sent everyone out for a bit, going to bath DS's and read a story and tuck them in bed in peace tonight, before Cuz, DD & her BF return for body guard duties over night. 
Let me know how you think we could deal with the IL's as nothings working & I've spent more time wasted today in discussions about them and Ex, so tired of it all 