It depends on the hospital you are going to, some supply things for the baby and others do not.
I couldnt use any soaps/washes on my son as he had dry skin and they dry it out so didnt need to take any of those, and the hospital had towles so Ididnt need to take them either.
The hospital I went to last time provided clothes and balnkets for the baby, all I had to take for him was something to wear home. This time I am bringing everything except for cloth nappies and snibs as these are provided.