Manufacturing companies based in Sheffield

thumb|1913 LA7b 30hp open tourer Sheffield-Simplex was a British car and motorcycle manufacturer operating from 1907 to 1920 based in Sheffield, Yorkshire, and Kingston upon Thames, Surrey.

integrated hydrogen energy solutions manufacturer

thumb|An old Liquorice Allsorts tin in [[Beamish Museum]] George Bassett & Co., known simply as '''Bassett's''', was an English confectionery company and brand. The company was founded in Sheffield by George Bassett in 1842. The company became a brand of Cadbury Schweppes in 1989. The brand's final owner was Mondelēz International, which merged the brand with Maynards to create Maynards Bassetts in 2016.