How to switch my firm and insurance choices

I firmed about 5 weeks ago and would rather go to my insurance uni instead, is there any way of doing this without purposely missing my offer? I've also already done accommodation at my firm so will this effect anything?

You *might* be able to but there's no guarantee. You should speak to your choices and explain what you want to do.

And see https://www.ucas.com/undergraduate/after-you-apply/making-changes-your-ucas-undergraduate-application

Have you signed any accommodation contracts (probably not, but I'm just checking)?

I don’t believe so, I’ve received an offer of accommodation but haven’t paid any deposits or anything etc. It says they will contact me further once my offer turns unconditional. And would I just email both my choices and they’d contact ucas to make it happen?