Thanks for all the posts everyone! Here's the context, if you're interested.
I agree sleep isn't a separate issue from how they are in the day, but I really have tried to put some good patterns in place. She plays happily on her own in the cot or playpen for short periods, like while I shower. Has been through a very clingy phase since 8 months but is fine with grandparents, familiar friends, her new childminder, people she knows. I do pass her around at every opportunity! Don't make a fuss when leaving her, don't leap on her at every whimper. But it has mainly been the 2 of us during my mat leave so she is understandably attached to me.
Was EBF until recently, now mixed feeding as I'm back to work, so bedtime and night feeds have all been from mum, almost without exception.
Her bedtime routine has been the same since she went into her own room at 4 months, and works well: bath, PJs, stories, breastfeed with lights off, cuddle, dummy, bed. Me out of the room without a word. Usually goes down sleepy but not asleep and used to settle really well. Then the dreaded separation anxiety kicked in and it's become much much harder. Touchdown in the cot met by screaming and a lurch to stand up as I leave the room. Total apoplexy.
Night feeds - we're still on a dream feed (bottle) plus 1 or occasionally 2 more, but the wakings are as many as 4 per night. I don't put the light on, don't talk, just pick up, cuddle, sway, put down when she seems ready to go off again. But as with bedtime, when she realises what's happening she goes mental.
Have tried introducing a soft toy as a comforter. She couldn't give a crap about that monkey 
Dummies used to work, now just take the edge off.
Daytime routine is solid but not rigid as I need some flexibility and you need to be able to get out and do interesting things at this age. She's on 2 naps still but both are a battle. Lots of swaying. She never took 3, ever.
My MiL tells me that DH woke up hourly until he was 3. I laugh, then go away somewhere and weep.