I saw them a couple of times at a pub in the next village to mine in the early 70,s. Venue was The Duke of Cumberland in North Ferriby, (which wasn’t too far from Bill Nelson’s hometown of Wakefield.) They put bands on pretty much every week, and when BBD played it was always a full house. I’d be around 15 then, and used to blag getting in to the concert room and not dare to have a beer in case the police raided the venue! Great band, happy days.
Apologies to the OP for thread derail. Nice bass too!