Some really great points raised, thank you (sorry for late response, feeding 2 is a task!)
I do feel that the protection of marriage is important and I suppose having children puts that in perspective doesn't it! Something you don't always think of when you are just thinking about yourself.
We share childcare as run our own business, so feel lucky in that sense. Another reason why I (we?) never thought we 'needed' the 'piece of paper' as it were. But it isn't just a piece of paper is it. it's a lot more than that and deep down i suppose something that is important to me. Not sure why in some way i find that hard to admit! lol!
We need to register the births asap so wouldn't have time to quickly get married and i wouldn't want to rush it if we did decide to. Also i would like a proposal haha and have some romance to it.
I explained to DP i didnt want different names really and he said 'oh we could get married' (he's not opposed i dont think) and so i sort of nod along because i want him to then think 'ok i will propose' rather than ok let's hop down the registry office. Maybe i am expecting too much!!!
singletomingle - interesting hearing a father's perspective too - i imagine it could be tricky in some circumstances to explain a different surname from your children.
It is also a little about how you are perceived at the school, appointments etc. And also i agree with others about how you are automatically assumed to be Mrs X - i found this in hospital and i just nodded along as found it a bit awkward!
I'm thinking double barrelled for now and then can always change or even keep it. At least then both our names are included. My only slight issue with this is that it may sound a bit OTT! It's not something you hear often really. Am i over thinking it?!
Glad to hear there aren't really any legal implications.