Divorce…Negotiating a settlement between us to present to Solicitor … Advice please.

So they’re not marital assets!

The public sector pensions / defined benefit pensions are a perfect example.

40 year career and married for 18.

9/40 due to the estranged spouse.
 
As a general rule of thumb, yeah, in a lot of cases, it is indeed that simple. But there are exceptions, the most common scenario being when one spouse brings a vastly disproportionate share of the assets into the marriage.
@Right Winger so what are you saying here? In a scenario where one part brings a significant amount of assets into a marriage then the split is not 50:50? Is this a fact. Have you have link etc to the law on this or an example?

I thought marital assets are split 50:50 bar taking account of nuances such as one staying in family home to look after kids.