Both of you need to complete the Form E, which you and your husband have to declare both side assets included: property, money, shares, income, debt, personal and household expense, etc.
If you have children, then depends on who will get the care and control, normally the parent got the children would be entitled to stay at the 'matrimonial home' (your property) until the children turn 18, of course it really depends on the finance of your husband whether he can be carry on to pay the mortgage.
If your asset and income are more than him, unfortunately his solicitor would suggest him to ask for share as in a marriage, all asset are belong to both of you, e.g. if you are a house wife, and he has lots of money or big business, he need to pay you a large lump sum or reasonable maintenance, if its the other way round, the out come result will be the same.
In you case, you really need a good lawyer. Good luck.
Sorry I don't recommend solicitor anymore to BK mum here I don't know, cause I have had bad experience before. You may check with someone else. Good luck and all the best.