Booking honeymoon before name change [duplicate]

For sake of question, we are UK based.

Myself and fiancée are looking to book our honeymoon for September this year to Singapore. She will be taking my surname after the wedding.

The issue is that her passport, which is in her maiden name, expires in May, and we do not get married until June. We do not want to pay to renew her current passport, and then have to pay again to change her name after the wedding.

If her passport was not due to expire, we would have just booked it in her maiden name and changed her name on the passport after the honeymoon.

If we were to book the honeymoon via Expedia, with flights via Qatar Airways, would this be safe enough to do by using her name with my surname, and then apply for the new passport after the wedding seeing as there are 2 full months between the wedding and travel date?

uk passports qatar-airways expedia

Best Answer

What appears to be an official UK government web site has a form for getting a (post-dated) passport in your new name up to three months before the ceremony. The person who will conduct the ceremony has to sign, too. [Link updated using @phoog comment]