Hutchison 3G UK Limited is a British telecommunications and internet service provider currently based in Reading, England. It is a subsidiary of CK Hutchison Holdings, operating under the global Three brand. Three is the fourth-largest mobile network operator in the United Kingdom, with 13.3 million subscribers as of July 2020.
The company launched on 3 March 2003 as the United Kingdom's first commercial 100% 3G network. It provides 3G, 4G and 5G services through its own network infrastructure.
Wikipedia https://en.wikipedia.org/wiki/Three_UK
Official Website https://locator.three.co.uk/south/reading/21-22-broad-street
Address 24 Cross Street, Reading RG1 1SN, United Kingdom
Coordinates 51°27'20.503" N -0°58'16.967" E