Sky Sports CALCIO 4 is a group of British subscription sports channels operated by the satellite pay television company Sky Group (a division of Comcast), and is the dominant subscription television sports brand in the United Kingdom and Ireland. It has played a major role in the increased commercialisation of British sport since 1991, and has sometimes played a large role inducing organisational changes in the sports it broadcasts, most notably when it encouraged the Premier League to break away from the Football League in 1992.