www.dailymail.co.uk/news/article-6309731/amp/Church-England-gives-blessing-transgender-marriages.html
You will need a GRC. Note that religions were explicitly exempted from marrying people with GRCs by the Gender Recognition Act.
To be clear there's nothing wrong with transgender people married, but it is disgustingly homophobic to force people to change gender to get married in the church to which they belong.
On a par with Iran