I go on a few British wedding sites becuase I live here and they have good wedding prizes. You usually need to answer a question to enter and they give you the link to an article on their site where you will find the answer.
I just found this gem:
Things to do 2-3 months out
"Select your readings and music and confirm your choices
with your minister/registrar.
Send out your invitations, including details of your gift list.
Confirm your booking if you’re marrying in a register office. "