Sky UK (formerly British Sky Broadcasting Limited, BSkyB and Sky) is a British telecommunications company which serves the United Kingdom owned by Comcast. Sky provides television and broadband Internet services, fixed line and mobile telephone services to consumers and businesses in the United Kingdom. It is the UK’s largest pay-TV broadcaster with 12.5 million customers as of 2018. It was the UK’s most popular digital TV service until it was overtaken by Freeview in April 2007. Its corporate headquarters are in Isleworth.