Hmmm I know your local registry office, and I'm surprised if they say you have to marry in Leeds, since I know not so long ago there was a bust at that registry office of a bogus ceremony.

Maybe the clerk there was mistaken, perhaps get your fiance to phone them, him being the local, and there will be no chance of him getting confused by jargon.
I'd go along myself and ask in my lunch break, as I work very near it, but it needs to be you two.

Lytham huh? Jlags, please don't judge the rest of the UK on what you might see in Blackpool