This ‘right-wing bias’ is fascinating. Does it include the BBC and ITN? Does it include The Guardian, Mirror or Byline Times?
Tell you what, mate. Why don't you try and find out what happened to the 6 million + signature petition that was calling for a second referendum on the government website. A good way to start would be to use a tool that correlates number of stories against number of signatures on government petitions.
If there is little or no bias in "the news" then you would expect the ranking of stories to follow the number of signatures.
Only they don't.
That immediately tells you that "news" and "news reported on" aren't actually directly proportional.
If you like your data big and bouncy, feel free to add in an extra dimension of viewers reached.
It's amazing what you can do with data, if you want. Although it's actually getting to be more amazing what isn't being done with data even though you can.