Hi Warwick,
I remember the Chowen's cake shop in King's Heath in the 1950s and 1960s. It was on the corner of High Street and York Road, opposite the Hare & Hounds pub. They did great cream cakes and nice cottage loaves. Can't remember when it closed but here is a picture of the premises in 2005. It is the buidling with the tower, next to British Heart Foundation shop. I will check to see if I can find any period shots of the cake shop.
Regards,
Brian