Hello Mate,
I would recomend getting in contact with the National working terrier club, see if they have any advice on people in that area who might mentor you. They can also make you aware of the strict legal guidelines that working terriers can be used under. unfortunately as I am sure you know, legally there is not supposed to be any digging for sport anymore, ONLY Pest control, regarding the killing of foxes to protect gamebird stocks. A working terrier club would also provide a wealth of information for you and allow you to discuss, breeds, equipment, etc.
I hope you do not take this t