Sky UK Limited, doing business as Sky is a British broadcaster and telecommunications company that provides television, internet, fixed line and mobile telephone services to consumers and businesses in the United Kingdom. It is a subsidiary of Sky Group and, from 2018 onwards, part of Comcast. It is the UK's largest pay-TV broadcaster, with 12.7 million customers as of the end of 2019 for its digital satellite TV platform. Sky's flagship products are Sky Q and the internet-based Sky Glass, and its flagship channels are Sky Showcase, Sky Max, and Sky Atlantic.

Sky Group Limited is a British media and telecommunications conglomerate, which is a subsidiary of the American conglomerate Comcast, and headquartered in Isleworth. It has operations in the United Kingdom, Ireland, Germany, Austria, Switzerland and Italy. Sky is Europe's largest media company and pay-TV broadcaster by revenue, with 23 million subscribers and more than 31,000 employees as of 2019. The company is primarily involved in satellite television, producing and broadcasting. The current CEO is Dana Strong.