All I will say on this matter, as it's your business and not mine, is leave it for at least 6 months. If you make a concious decision to beat him senseless after the time has passed, well, all your choice. Don't do it now. Trust me, I know exactly how you feel, as I do a similar job, and it happened to me. Best thing, is you earn proper cash, he won't if he works for the bloody woolwich.. Get your life sorted, then flash some hard earned to get a few trophy birds and be SEEN having the time of your fucking life.

It will all work out, get yourself out of her life, take everything thats yours, sell the house and keep the cash. Fuck the 'Common Law' of living with people, just get out, take/sell everything and let her and her kids find their own way in the world. Bet you this fella won't be too keen when he suddenly has to pay for a family.

My brother didn't do any of that, now his wife and 3 kids live in Canada on his salary. Fuck her, look after yourself m8.

Good luck!