He came to my garden yesterday and he was breathing, I Woke up today and he was in the same possision as yesterday, he's nose moved but he's not breathing, what shall i do? how do you know if he's dead? please help xx aysha xx

Take him to a wild life vet

He may be confused about hibernating as our weather is mad, you could put him in a box in a quite place with water and cat biscuits and call the rspca.

Where do you live?
Hedgehogs are not native to the US, so if you really found a hedgehog it's most likely a pet that got away and you need to take him in or turn him over to a vet or a shelter.
His nose would not be moving if he wasn't breathing.
If you live anywhere in Europe leave him alone, he'll know what to do. Just make sure he's not anywhere near a busy roadway.