BBC apologises over interview with climate denier Lord Lawson

Exclusive: Lawson's claim that global temperatures are not rising went unchallenged, breaching guidelines on accuracy and impartiality

The BBC has apologised for an interview with the climate change denier Lord Lawson after admitting it had breached its own editorial guidelines for allowing him to claim that global temperatures have not risen in the past decade.

BBC Radio 4's flagship news programme Today ran the item in August in which Lawson, interviewed by presenter Justin Webb, made the claim. The last three years have in fact seen successive global heat records broken.