Hello Nelly, Brian will not be pleased you adding a few years on his clock! I have known Brian and I am familiar with his type of terriers for over 25 years, the man has in the past preserved, note the words past, the black type fell/patterdale type terrier more than most. Depending on how far back you can, or wish to trace your pedigree there is bound to have been some in put from Terriers Brian had something to do with.
However, lets look at the other side of the coin, I do not want to slag Brian off as I have known him to long, never dug with him, friends have in the past and all with