Broadcast

BBC 
The crown (publicly owned)
Founder(s): John Reith and George Villiers
Revenue: £5.086 (2011/12)
News channels: BBC News, BBC Parliament, BBC World News, BBC Red Button, BBC News 24

BskyB
Rupert Murdoch 
Revenue: £6.791 billion (2012) 
Operating Income: £1.243 billion (2012) 
Net Income: £970 million (2012)
Parent company/Holding company (a company or firm that owns other companies' outstanding stock.): 21st century fox
News channels: Sky News, Fox News

ITV
Owned by: ITV Plc, STV Group plc, UTV Media plc
Audience Share: 
- ITV = 14.0% 
- ITV+1 = 1.0% 
- ITV HD = 1.4% 
(December 2013, BARB)
News: ITV News

Channel 4
Channel four television corporation
News: Channel 4 News
Audience Share: 
- Channel 4 = 4.9%
- Channel 4+1 = 0.9%
(October 2013, BARB)

Print

BskyB
Rupert Murdoch 
Revenue: £6.791 billion (2012) 
Operating Income: £1.243 billion (2012) 
Net Income: £970 million (2012)
Parent company/Holding company (a company or firm that owns other companies' outstanding stock.): 21st century fox
Newspapers: The Times, Sunday Times, The Sun

Guardian Media Group
C.P. Scott
Revenue: £254.4 million
Newspapers: The Guardian

Daily Mail and General Trust
Editor: Paul Dacre
Political alignment: Conservative
Newspapers: Daily Mail
Circulation: 1,863,151 (January 2013)

Telegraph Media Group
Editor: Tony Gallagher
Political Alignment: Centre-right conservative
Circulation: 541,036 (Feb 2013)
Newspaper: Daily Telegraph

Trinity Mirror
Editor: Lloyd Embley
Political Alignment: Labour
Circulation: 1,058,488
Newspapers: Daily mirror

E-media

BBC
The crown (publicly owned)
Founder(s): John Reith and George Villiers
Revenue: £5.086 (2011/12)
E-media: BBC News online

BskyB
Rupert Murdoch 
Revenue: £6.791 billion (2012) 
Operating Income: £1.243 billion (2012) 
Net Income: £970 million (2012)
Parent company/Holding company (a company or firm that owns other companies' outstanding stock.): 21st century fox
News channels: Sky News, Fox News

Yahoo
Founders: Jerry Yang and David Filo
Revenue: US$ 4.98 Billion (2012)
Operating Income: US$ 566 Million (2012)
Net Income: US$ 3.94 Billion (2012)
Total assets: US$ 17.10 Billion (2012)
Total Equity: US$ 14.56 Billion (2012)
News: Yahoo News

Google
Larry Page, Sergey Brin
Revenue: US$ 50.18 Billion (2012)
Operating Income: US$ 12.76 Billion (2012)
Profit: US$ 10.74 Billion (2012)
Total Assets: US$ 93.80 Billion (2012)
Total Equity: US$ 71.72 Billion (2012)
News: Google News, through Google search

Twitter
Founders: Jack Dorsey, Noah Glass, Evan Williams, Biz Stone
Revenue: US$ 317 Million (2012)
Users: 200 Million (active Feb 2013)

Facebook
Mark Zuckerburg
Revenue: US$5.1 Billion (2012)
Operating Income: US$ 538 Million (2012)
Net Income: US$ 53 Million (2012)
Total Assets: US$ 15.10 Billion (2012)
Total equity: US$ 11.75 Billion (2012)
Users: 1.19 Billion (active september 2013)