Since its establishment in 1900, NPL has been delivering innovations to improve prosperity and quality of life for those living in the UK. In the late 1960’s NPL invented packet switching, a key ingredient of the internet, and this was then further developed into general computing and ultimately quantum computing. The Kibble balance, formerly the watt balance and renamed after Bryan Kibble who worked at NPL, was developed in the 1970s. It compares electrical and mechanical forces, which allows the kilogram to be realised in terms of quantum electrical units.