Bumbly, shame you didn't get on with the NCT group!
Is there anyhting like surestart in your area, or a childcentre of some kind...they often give short courses in things like Babymessage, which is a wonderful activity especially with an unsettled Baby!
I think it's in any case best to try loads of different groups out, and see what you like the best.
Also, if this is at all possible, maybe you could have a regular set time just for yourself...where you could go for a long walk or bike ride, or whatever it is you enjoy...it will give you somehting of yourself back...if that makes sense...!
I have not read any previous posts from you, I think, well, I can't remember if I had...but by what I have taken away from reading others posts, you are having a difficult time right now...not finding it easy being a mum, etc...!
Maybe you could contact a Postnatal supporter (from the NCT), they will know what there is in your area, and just be able to lend an open ear and a shoulder to cry on.
Motherhood can feel so isolating in our society, as sometimes it seems like your whole world seems to go upside down...freinds you used to be close with, but that don't have Kids sometimes turn away, and sometimes it doesn't feel right that all new friendships seems to be based on the one thing in common, which tends to be motherhood...and I think that is where a lot of women getting some kind of identity crisis...
Whilst I think, that indeed having some time to yourself, I somehow feel that maybe you are having troubles bonding with your Baby ( I experienced this with my 3. child, and him being an unsettled Baby did not help matters) so, trying to find activities together that you both enjoy will help with that....(Babymassage is one of the great ones for bonding, and there are so many babygroups now, Babyyoga, etc...so, maybe something like that will help you both)