I would say take what you think you will need and want, we have people turning up with a huge case for themselves a case for baby, car seat and carrier bags as well which is a bit much, the problem is space is quite limited especially when you are on a ward and it can be a real problem at times if there is a to much stuff around a bed.
Remember that people will be coming to see you, so they can bring in things you need so I would leave the coming home outfit for you and baby near the car seat at home so that your hubby can pick it up when he comes to bring you home.
The essentials I would say are;
t shirt or nightshirt for labouring in
clean nighdress x 2
feeding bra x 2
disposable knickers or very cheap ones from asda or similar (3 pairs £1)
sanitary towels 2 packs (these can double up as cot matresses they are so huge) slippers or similar and dressing gown
wash bag & make up if you want
breast pads and lansinoh
bottle of squash
arnica for bruising
coins for phone box you cant use mobiles on the ward and may not want to leave the ward
magazine or book (you never know you may get to read some)
snacky bits few bits of fruit is good but for this I would leave a list of bits for people to bring you
for baby I would say 3 vests,
3 sleepsuits,
nappies about 10 (should be more than enough for one day people can bring you more in)
cotton wool
the camera is essential of course
I left things that like car seat, coming home outfits, nappies, sanitary towels, lists of snacky bits etc in the babies room or bed so they were all together and dh didnt have to go searching
I was all organised the last time even with snacks for dh but I got sent to hospital straight from my drs and didnt have anything with me but at least dh knew where everything was