EPL Talk wonders if Google pays a fee to display this information, but I wouldn't worry about that. "By law, publishers must pay a license fee to the Football DataCo Limited company that in turns shares the money with the clubs in the Premier League and Football League."
It's interesting to notice that Google SMS and Google's mobile search engine show scores and schedules from NBA, NHL, MLB, NFL, NCAA and from many football championships: Primera División, Serie A, Bundesliga, Ligue 1 etc.
* Note for the American readers: you may replace "football" with "soccer" in this post.