Our hospital used pampers. From 2lbs when he was born to 5lbd when he left. My son was in NP then P and then Newborn
Apparently asda give size 0 for free. I didn't know this until mine was out of size 0, but wish i had!
I was going to suggest the same thing as Amy, I used the free ones from Asda :) I think you have to ask at the pharmacy x
There has been a bit of a shortage of the larger free ones at Asda, the size 0 fred and flo also good for that size, but all depends on how much they weigh
I used Huggies in the hospital, but she fit in the newborn ones, too. She was over 6 lbs at birth, tho so I guess it depends on the size of your baby.