If you find a hedgehog that is injured or ill, then most vets will treat wild animals for free, or in return for a donation. You could also contact the Hedgehog Lady in London Colney
. She does amazing work caring for and then re-releasing sick and injured hedgehogs, but bear in mind that this is a tiny charity. If you can make a donation
then the money will enable the Hedgehog Lady to feed and care for more hedgehogs.