You have almost as much chance of seeing a Gruffalo as a live badger. I reckon I must have seen about a thousand badgers in my lifetime and 998 of them were dead.
When we had the farm (before we sold up) we had a Badger Sett on our land, it was interesting to put nuts out for them, and then watch them under a 'red' spotlight (they cannot see colour red)
It was a very active Sett and we would, most nights, have 20+
Don't get me started on the 'Tree-Huggers' / Badger protection league who would break down our fences and 'trespass en-masse' virtually every week to ensure that we were not 'digging them'.
Foxes actually used to 'share' some of the older parts of the sett - I shot 12 of them over the course of a couple of months.
To bring it back on topic :
Our land incorporated the old 'Ffrwd canal' and the sett was in the old mine spoil heap.