Imwarr, other than the Child tax credit of which i know nothing, I think it's really up to you. Personally I haven't bought a sausage as yet, if possible then I'll probably start looking to sort out the nursery about 3-4 weeks before my due date, mind you apparently you need to look into delivery dates and times as my sister had to wait about 4 weeks before recieving some of her baby furniture.
The hospital bag I 'll probably sort out 2 weeks before my due date.
I'll wait till I'm on maternity leave so I can focus on everything a bit better!