Led by Lister, a number of UK firms made 3-wheel industrial trucks or ‘autotrucks’ during the 1950s.  Most familiar is the Lister Autotruck powered by JAP or Lister engines, but another that appears to have had some popularity in Australia is the Wrigley from Wessex Industries of Poole, Dorset, UK, powered by a small Villiers engine. 

I recently purchased an industrial truck, also powered by a Villiers engine