Big thanks to John, GW4FRX for coffee and a cookie at Dobbies near Shrewsbury.
Oh, and the little Sony TV too
Seems he was working with and only a few miles away, from my then employer's products more or less contemporaneously with my time in Bracknell. He also knew the term "Dim MANWEB"- perhaps the first person I've met since I left Bracknell who did!