Huffy was supposed to be a US company, although they also imported some of their bikes.
The tag "Made in England" would indicate that it is probably a rebadged Raleigh or Hercules.
The 3x3 hub may well have been original considering the origin in the UK.
Actually, according to the
Sheldon Brown page:
Huffy
Although primarily known for low-end department store bikes, Huffy sold Raleigh-built bikes under their own name in the 1960s. Huffy was also the first U.S. importer of Moulton bicycles.
If that is a "51" on the hub, that may date it to 1951.