I,too,remember Stan Wandzilak from Driffield days; I was there from Jan-April 1952, and I'm pretty sure he was one of the QFIs on our flight. He never instructed me, but do remember him to be a much liked and respected member of the staff. For some reason he always told us he was a naturalised Welshman!
I met him subsequently, he as Flight Safety at Flying Training Command visiting Swinderby, where I was a QFI, and then when he was CFI at Oakington, and I was a lowly staff officer doing staff visits from 23 Group. It was always a pleasure to meet him again. A real gentleman.