Dear OP, wanted to make sure you got an answer too as did previous posters.... Very late..... ten past one....
You can get protection from a non-mol application, with an Undertaking, or Power of Arrest attached, or under Protection from Harrassment Act. As others have said, there is help out there. And your children are of paramount importance.... though not my field. Why not go to CB, ask? Social services? See what your options are, but you should act to return to the MH asap... ok? You have a right to the occupation of it - and/or do a LR MH1 if privately owned and in his sole name.... Just some suggestions.
Plenty of help out there, and no doubt some far more expert Wiki than I am will be along in the morning to help you. OK? Just only I happen to be up, at 1.20 am and on here - and wanted to help as much as I could..... there are solutions, you know. Depends if you want them or not: in my humble opinion, you are sooooo making excuses for him...... but that is up to you. Night night