FILE - In this Oct. 1977 file photo British Prime Minister James Callaghan addresses the annual Labour Party Conference, in Brighton, England. Prime Ministers come and go, but News Corp. chief Rupert Murdoch stays and stays and stays. Murdoch has played a key role in shaping political British political coverage for the last four decades, and testimony at the Leveson inquiry into media ethics has highlighted how prime ministers have both courted and feared the 81-year-old media mogul. (AP Photo, file)