Both my Uncle, another John Mills, and my father, known as Dave Mills raced in the mid 60's. I remember as a young child going to meets with them. I have a recollection of my uncle breaking his leg at a meet in Poole and my dad having to drive down to pick him up.
My Uncle has his original leathers hanging up in his workshop at home, but i doubt he's get into them now!
We're based in West Wales, be interesting to see if anyone remembers them.