We used to have a couple of hedgehogs visiting our garden very late at night - they would activate the outside security light and we could peer out and see them toddling up the garden. However, sad to say that we haven't seen them lately.
I did read somewhere that they do like to visit gardens with a pond for a drink, especially in this hot weather I would think, and saw a tip which said to ensure that you have a sloping edge, a plank or ramp of wire they can climb out if they fall in.
When they do go to hibernate they may choose a compost heap or twigs etc stacked up for a bonfire, so check first before setting the bonfire alight.
I must ask my neighbour if she has had any, as they rescued some last year.
Apparently - Employers are not working people
AIBU To Suggest We Should Call Time On Fireworks?
...we where watching and feeding the tiggywinkles last night too