My partner is going through a divorce/financial settlement at the moment.
His wife refuses to sign anything. His solicitor has now told him that the divorce can be settled separately from the financial agreement. If she won't sign, it can be issued anyway. I've forgotten how much the fee for that is, but it's hundreds of pounds rather than thousands.
He hasn't retired yet, so the pension is in the future. They had a separation agreement that their financial situations would be equalised after retirement. She retired at 60 with a pension, which she won't declare. She also receives monthly maintenance and received 70% of the value of the house on separation. His pension is generous, so she's losing out by not signing. My partner has been told that if she won't sign anything and won't declare her own pension (and how much she's already received), he can make an offer - if she refuses it, that's her business, but she's going to have to counterclaim. They separated 8 years ago and she's still playing mind games.
It's important for us as a couple that he's divorced. Firstly, I feel uncomfortable living with him until he's divorced. Secondly, while he's still married, his wife is the beneficiary of his pension, if he were to die and I would have no financial security. I know that sounds a bit mercenary, but I've been stung once - never again.
PS. The solicitors involved have been professional, helpful and fair.