This was a 6-year marriage with no children. The £200k house deposit is clearly non-matrimonial property, coming from the sale of a flat he owned before the marriage. Courts will ring-fence pre-marital assets unless there’s a compelling reason not to and “I want half” isn’t one.
You chose to leave, moved out while he was away, and you earn more than him. He wanted to work things out. You’re also younger and will be working longer. There’s no financial dependency here.
Paying half the mortgage during the marriage does not entitle you to half of a £200k pre-marital deposit.
As for savings, the ISA, and his pension: assets accrued during the marriage may be considered, but fairness does not automatically mean a 50/50 split particularly where one party is older, has fewer earning years left, and more limited mortgage options. Any pension built up before the marriage would also generally be treated as non-matrimonial and protected.
Realistically, you’d be wise to follow your solicitor’s advice and accept what’s being offered. Otherwise, you risk spending more on legal fees only to walk away with less.
Courts divide matrimonial assets fairly, not equally, and not on the basis of one party’s sense of entitlement where the facts clearly don’t justify it. Expect fairness, not a jackpot.