Hi MG

We're not sleeping through either. Have you tried:
Osteopath
Same sleep routine in the middle of the night (I can recite the bedtime book without turning the lights on!)
Does she have nappy rash or a dirty/sodden nappy
Pat and ssssh
Homeopathy
Rolling over, so going back to sleep on back/tummy if fell asleep on tummy/back

DS is getting the idea, we changed a few things last week or so:
Daddy does bathtime and bedtime
If he refuses to go back to sleep and just laughs, we let him cry for a few minutes. We attend him the moment he wakes up, but he's just messing us around he has to know that's not on.
Homeopathic medicine
Calpol pre-bed (he has a few bugs atm)
As much giggling as possible during the day
Encouraging alone playtime

Best of luck to you, it's a nightmare! I've got an active little beastie too. He will play in his cot for a half-hour if he wakes up early, which is nice for me.