P1, P2- News Providers of the World

Sources

Print-

https://en.wikipedia.org/wiki/List_of_newspapers_by_circulation

https://en.wikipedia.org/wiki/List_of_newspapers_in_the_United_Kingdom_by_circulation

TV-

http://www.adweek.com/tvnewser/basic-cable-network-ranker-august-2017/339773

https://www.statista.com/statistics/269807/leading-tv-channels-in-the-uk-by-reach/

Radio-

https://media.info/radio/data/the-most-popular-radio-stations-in-the-uk

https://media.info/radio/stations/talksport/listening-figures

Online-

http://www.ebizmba.com/articles/news-websites