I decided to come back and update! In case it would be helpful for others in the future.
my (now!) ex husband was a pain for the entire process, refused to engage, refused to mediate. He took me to court over our financial dispute, he was asking for 50:50 on the house and my pension, and that I retained all debt.
The judge initially saw our barristers and their stance was H was entirely unreasonable, and that we should be returned to our financial positions pre marriage. This was mainly due to our ages (early 30s) and short marriage.
The final outcome was to retain our separate initial house deposits and split remaining equity 50/50, I kept my entire pension pot (175k+) intact and offset our marital part by paying him an additional £16.5k on top of the house equity. All debt was shared equally between us.
This ended up on paper as our house sale being split 60/40, my pension stayed mine and I repaid debt from my 60% share.
Annoyingly for me, I offered him a very similar scenario when we separated, 60/40 house + my smaller pension pot (CETV 30k) and marital debt repaid. So court ended up a better outcome for me, but came with £20k of legal fees.
Worth every penny to be free, we settled in January, divorced in February and I can finally say I am happy.