Jack started in 1954 using an Austin seven based car, the LT Special which would have been quite uncompetitive so he soon switched to a Cooper- JAP. At some point he moved to Norton and '58 was in a Mk X Cooper. When the 500's started to wane, Jack acquired a 1.5 litre Emeryson, that had been used as an F1 car, but didn't race that for long.
Some Results for Jack:
If anyone has more details, please get in touch.