“…The BBC relies on the Conservative Party for 73 per cent of its statistics, fails to mention the context in which those statistics are set, and fails to challenge them where necessary….”
FWIW, media outlets like newspapers or online feeds either print or do not print press releases, they do not edit them. If the BBC publishes a press release that they know is biased or contains errors, that’s on them. If they never investigate an issue to verify information in the press release they publish, that’s on them too. It comes down to whether anyone calls them on it and gets an audience to prove them wrong.