Thanks for getting back to me. We bought the flat in Nov 2010 for 240K. As it is in London and in desirable area the value of the property according to Zoopla has increased by 120K but I think it is worth more as other properties in that block which haven't been renovated and of the same size are valued by Zoopla to be more.
I'm not quite sure what is outstanding on the mortgage as he has all the paperwork. He paid 40K as a deposit and I think every now and then when he has had a bonus he has added a bit more to it to bring the mortgage down. If Im right, I think he added 7K to bring it down. I need to get hold of the files from him so I can be exact. Im just wandering if I have a leg to stand on because the mortgage was in his name and I had signed a form saying I wouldn't take any of the equity. I think we borrowed 200K from the bank for the mortgage and because interest rates are so high over 3 years we probably only paid off about 10K of that amount.
...Also, we separated end of December last year. But it was finally over by end of February this year.