ExH left 3 years ago. We have two young kids (9 and 4). When he left, I had a separation agreement drawn up BUT NOT FINALISED :( that he signed, saying he'd pay £400 CS and give me 70% of house's equity.
3 years on, still not divorced... He has cooled off and is now paying NO CS at all, and saying he'll only agree to my having 55% of house's equity.
He also has a pension worth £25k but he won't agree to my having any of that either. 
What can I do? Only have till Jan 30th before the Decree Nisi runs out and would have to send in an affa davit explaining why it's taken so long to come to an agreement.
Kids live with me every day except Weds nights & alternate weekends. ExH is self-employed -- as am I.