Leo Hickman has interviewed James Lovelock again, the result being this article. There is also a set of transcripts, which contains this interesting statement.
I keep contact with the Hadley Centre. They are one of the best climate centres in the world. Something to be proud of. They should be given credit. They are under enormous pressure from government and are not allowed to say what they really think. But there's some really good scientists there. I like Richard Betts very much and respect him. He couldn't be a scientist and not discuss the uncertainties [in climate science]. Three cheers for him.
I wonder whether central government is asking the Met Office not to express their concerns in full or whether they are asking them not to go into too much detail on the uncertainties. The quote suggests the latter, but the former seems more likely given what we know about central government.