These pictures are from an article in “The Motor Cycle”, July 1958.
Unfortunately of very bad quality (copy from copy).
I hope somebody shows up with better pics a/o with more facts about this machine and its creator!
Source ‘Desmo Dreams’: ‘Ron Gardner : The original Jet-setter’; in Classic Racer, july/August 2012 p. 62-68.
Classification = Group 2. Compare Henry/Peugeot system (stirrup-type) and replace the single (opening) cam with the two rollers of the Ariel-system