if you read the article, the quote in the title ("There was massive left-wing bias at the BBC") is referring to 1979.

immediately following that quote: "Now it is a completely different generation. There is much less overt tribalism among the young journalists who work for the BBC. It is like the New Statesman, which used to be various shades of soft and hard left and is now more technocratic. We're like that, too. We have an honourable tradition of journalists from the right [working for us]. It is a broader church."