This exceedingly rare 1922 Unibus was displayed at the Prescott Hill Climb motorcycle event in June 2018. It is owned by Mike Webster, the man in the bowler hat in the photo.
The display board alongside the bike says:
"UNIBUS – THE CAR ON TWO WHEELS 1922
Manufactured in Cheltenham by Gloucestershire Aircraft Co. at the Sunningend works premises of HH Martyn.
Designed by Harold Dalton Boultbee and marketed as 'The Car On Two Wheels'. Believed to be the first fully-enclosed scooter." PNB
Photo: © Paul Blezard