Is proportional land registry entry possible between spouses?

Just for completeness: You already built up the higher equity share before the marriage? Or did you each build up your equity share before the marriage? Because that should be the "starting point" in the statutory community of accrued gains: share of equity before the marriage. Keyword: equalization of accrued gains for the assets accumulated during the marriage.

But a lawyer/notary can advise you on this more precisely.