Welcome Harry, your DD's sleep sounds terrible... Is she doing/trying to do something new developmentally? Let's hope it will pass soon! 
Mirrhi CC at 4 months? Your HV needs a bit of basic reading about babies' sleep and sleep training me thinks.
Artemis I've given up on trying to do something about DS's naps a while ago - he only naps for 30-40 mins in a pram 3-4 times a day, which I know is not enough for his age but nothing seems to work to make them longer so I just let them be. Don't have the energy to fight over naps too!
Keep glad you had an ok night.
Cakeis poor you have some
and
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Soup hopefully she will get better again once teeth are out? Regarding the leaky nappy - I have managed to miss a massive poo stain on DS's vest when I was changing his at 6am this morning and left him in soiled clothes! (Not trying to justify your OH's "helpfulness" btw)
DS in bed 8.50 last night. Woke up about 3 or 4 times in the first hour, then 10.20, midnight, awake for 40 mins till I gave in and fed him, 2am, 5am, 6.20, up at 7.50 