Capital Gains on transfer of equity?

I am in the final stages of divorce having had a very lengthy process to reach financial settlement. At the point the divorce concludes I will be paying my ex husband £50k in exchange for full equity in what was our marital home. This payment will be funded by a new mortgage being taken out with my new partner. He currently owns no property but has funds from a sale of a house last year, which we’ll be using to contribute to a deposit for the remortgage arrangement. The house has been valued at £400k and we will be securing a mortgage for £220k Given levels of equity already in the house and my new partners deposit contributions we have agreed to divide the property equity as follows: 67.5% in my favour c£121.5k and my partner then taking equity for the remaining £58.5k. Does this give rise to any capital gains from my partners perspective?

Hi Ugibbs,
No, as nothing has been sold as yet.
Thank you.