Yes Graham, Pat Harper was my sister's friend when they were little girls. Once Jenn went to Great Barr Comp I think they went their own ways.
We have exchanged info before, I think your brother is Michael B !!
Witton was always B6, before post codes we all had numbers to make it easier for the postmen. My husband lived in Amberley Grove right on the edge of Witton/Erdington and that was also B6.
Oldmohawk, the Clifton has been very well taken care of, I have watched it over the years and not a brick has changed. I used to walk,to it with my aunt from Hamstead along the cut (canal) some Saturday evenings. Sometimes we would go to the Beacon, opposite the Scott Arms.