Just to point out that either partner can change their name when they marry.
But if a wife takes her husbands name the marriage certificate is the only paperwork needed. The other way it's deed poll time (not that that is especially difficult).
I don't believe that's the case any more. It was when I got married in 2016, so I left it, but I need to renew next year and it's no longer the case, marriage certificate is enough for men too.
Just to point out that either partner can change their name when they marry.
P.P.S. Fuck the Tories