Hi Roger
Thanks for your reply and it will be interesting to see if you have any correspondence or photos of my parents.
John Yellop doesn't appear to have been on line since August 2011 but you could always send him a personal message, I don't have an email address for him.
Have you looked for your family on the census as I could see your Great Grandfather who was a policeman and maybe John Yellop could be a relation from one of his brothers?
Pat