Fox and badger wouldn't explain the total wipe out here. Very small badger popualtion here.It must be that vhd or something similar. Most of the warrens here are on Beach's. clean and ideal breeding grounds with plenty of food for them. There's no brids of prey here either. Maybe the odd sparrow hawk.
Did notice a large amount of mink in the last two years. They would have a serious impact on them.
Atb j