Hi lewisdad
I’m sorry to say, that releasing hedgehogs into an area from elsewhere can sometimes do more harm than good. It can impact not only the hogs that have been released, but also those that were already in the area. BHPS and others have recently produced these guidelines:
https://www.britishhedgehogs.org.uk/wp-content/uploads/2018/09/BHPS-Guidance-For-relasing-Rehabilitated-Hedgehogs.pdf
The good thing is, though, if your neighbours are feeding hogs, there are still some around, so it seems very likely that they will venture back into your garden at some stage. Whether or not it is before hibernation, at this stage, is another matter!
