RSPCA will tell you, Jacqueline.
here in Bristol we had a abundance of wildlife but Hedgehogs have not been seen for along time.I use to have them in the garden all the time but I think and only my opinion is that a lot of the gardens here have been graveled or tarmac ed over and houses pushed in every space.The Traffic slaughtered a lot and the last ones i saw in the road were a few years ago.I can find no evidence of them in my garden,(use to find droppings)for ages,in fact about 2 years.sad times.
I always had hedgehogs in my garden every year from the old allotments out the back, I got a hedgehog box and one lived in it one winter. I used to leave out a dish of crushed peanuts, dried mealworms and raisins, that attracted the slugs at night, gave an extra feed for the hedgehogs. Sadly one of the houses out the back next to the allotments put a six foot fence round her garden and now no hedgehogs can get through. Sad about that.