Crabby, fantastic news, congratulations. Do let us know how it goes.
ScottishMum, once again you rather miss the point...it's not beyond our ken that someone wouldn't wish to get married. You've told us, over and over and over again that you don't. I think we've all got the message. It may come as a slight disappointment to you, but no-one's judging you for that.
What is slightly irritating is your insistence that it's possible to be just as secure if you cohabit if you just do a few bits and bobs - job done. It's just not true. You say "Next of Kin" can be sorted at the GP, or with a card. Yeah right, but "next of kin" has no formal status in law - unlike "wife" or "husband".
You seem to think the pension issue can be dealt with if your partner nominates you as a beneficiary (if his pension scheme allows) but if you separate he can change that with the stroke of a pen, and you won't have a leg to stand on. Whereas if you're married, his pension pot is taken into consideration as a joint asset.
All we're pointing out is that you can have as many bits of paper as you like, but as a cohabiting couple there is nothing you can do to address the complete absence of protection if you separate, the inheritance tax liability, and the absence of state pension and bereavement benefits.
Is it really beyond your ken to acknowledge these facts?
I don't care what you think, and I'm quite happy to hear your opinion. But it's really quite wrong of you to mislead other people in the process.