Keith Marsden unfortunately passed away some years ago, but his group Cockersdale still endure. Try getting in touch with Graham Pirt, he is a member of Cockersdale. I am sorry I don't have contact details for him but if you do a google search on Sam Pirt, that is his very amiable son and extremely capable accordion player. I feel sure he will put you in touch, I suspect he may well be a 'Catter too.

Chris