All this bushing talk intrigues me, a relatively new term I think.
I can't remember lads 20 years ago talking proudly of their bushing terriers.
Bushing used to be something that was done in the summer months, for a bit of fun, and to keep the dogs occupied and fit. Now some lads are specialist bushers and talk about their bushing prowess without a hint of embarrassment or even irony.
Most types of dogs can be trained to hunt through cover, I've seen Heinz 57 mongrels who could give a field trial Spaniel a run for it's money.
The working Bedlington is (in my view) on the verge of ruinat