While I would love to believe that my country is so globally influential that no other researcher in the whole wide world bothers to go to the freely available raw data from the world's weather stations, but every one of them uses secondary figures fudged by a single British uni, I would like to see some evidence for this astounding claim. What are these "news sources," and are any of them not owned by the Murdoch Corporation?
And when the "other" sources (I would love to know what those quotes mean) go elsewhere for their data (as they surely will now) and get the same results, who will you blame then? That's the trouble with conspiracy theories: like Pinochio's nose, they keep growing and growing.