Headquartered in Yiewsley, England, John Guest has offices in North America, Asia, Europe as well as the Pacific.
In 1997, new offices were established in Sydney, Australia - JG Pacific and John Guest SL in Barcelona, Spain.
Guest started his working life as a toolmaker apprentice in the Royal Ordnance factory in Hayes.
During the 1960s both companies grew steadily specializing in simple die-cast products and tool making, consolidating their business in the white goods and automotive industries.
In 1974, Guest invented the ‘speed fit’ tube connector concept followed by opening his second factory at Yiewsley covering around 9,000 sq ft the same year.
The new product reduced assembly times to a few seconds with an instant tube-coupling system, which needed no tools for putting together or disconnecting.