Thanks Yimini for the recommendation, I think you're probably right that it's about knowing when not to intervene - I have tended to just take the line of least resistance and scoop her up to feed straight away, as so often in the early days I was a bit thick and tried everything apart from feeding, believing she couldn't possibly be hungry half an hour after the last feed and both of us becoming increasingly upset by the time I actually worked out that yes, she actually could...
Cheeky, sorry you're in the same boat. I'm pretty sure mine is sucking for comfort a lot of the time too. If we crack it I'll let you know 
Momo, 20 seconds sounds very short, can they really settle themselves that quickly? What do you do for comfort in the cot? Shh pat type thing? That just doesn't seem to work for us at all, I have to practically climb in the cot with her for comforting her in there and that only works about 25% of the time (we have a sidecar type thing but she's close to growing out of it).
White noise - we have a Ewan which sort of helps a little bit, but again, not very often.
Dummy - interesting that people think this might be a problem. I'm not convinced really, as if it were dummy reliance then shouldn't popping it back in solve the problem? She is just starting to be able to do it herself but to be honest I don't think she's overly fussed - it helps her fall asleep initially if she's already fairly relaxed, but if I try giving it to her when she wakes she just spits it out again. I could give doing without it a go though.
InFrance, thanks, I like what I've seen of Sarah Ockwell Smith. May check that out. We do end up bed sharing most of the time after her first or second wake-up, she sleeps a bit better that way but I assuredly do not... I thought the co-sleeper crib thing would be just as good but it does not fool her!
mswales, interesting. She is still in with us, I thought moving her into her own room was one thing too many with me going back to work and starting weaning as well. I think we may try moving her in a couple of weeks, though the thought of having to actually get up the number of times she wakes at the moment is...unappealing! Did you do the CC when he woke up in the middle of the night then? I think I would need to mentally gee myself up a lot for that but if nothing else works I may give it a go.
Q, yes, she does feed pretty much every time and I think you're right - but DH comforting her doesn't seem to really work, perhaps because I am also right there and she knows she could be feeding? May work when she moves into her own room?
RockinRobin, you might be right - we definitely do have feeding as integral to the end of bedtime, which makes it really hard for DH to put her to bed too, which is quite limiting for us. Maybe we need to pick a time when DH is feeling brave and let him do bedtime for a week so she doesn't continue associating feed and sleep.
Thanks everyone for suggestions, I think it boils down to me needing to be a bit more persistent in not taking the line of least resistance by feeding and scooping her in with me straight away! Will have a look for some of the suggested books and have a think abut what we can cope with trying 