George Wilson Industries Limited was established as George Wilson Gas Meters in Coventry in 1904. The business became a public listed company in 1937. In that same year George Wilson was advertising itself as producing 'all types Dry Gas Meters; Test, Cost, Demonstration, Day and Night, Two-part Tariff, Therm, Detective. Service Collectors. Rutten Valves. Governors. Padlocks. Leather Gloves, Mitts, Maintenance Goods. Pressure Gauges. Gas Immersion Heaters' at the British Industry Fair.

By 1961 the company was described as 'Manufacturers of gas burning, oil burning and other appliances in domestic and industrial fields.' They also manufactured gas meters. At this time the company had 350 employees.

In 2008 George Wilson Industries, now also known as GWi, was part of the BI Group along with GMT. The BI Group was part of Elster Handel GMBH.