BBC TV's Newsnight programme was investigating Mr Campbell's role in a controversial poster campaign designed by advertising agency TBWA.
In an email apparently intended for a Labour party official, Mr Campbell suggested that TBWA should tell Newsnight that Labour and the agency worked well together.
He then added: "Now fuck off and cover something important you twats."
Mr Campbell later dismissed the row as a 'silly fuss' in a further email to the BBC.
No love will be lost between Mr Campbell and broadcaster after the WMD episode and Hutton Inquiry in 2003. Mr Campbell left his role as government media chief in August 2003, but returned to work on the Labour Party general election campaign.
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BBC coverage: http://news.bbc.co.uk/1/hi/uk_politics/4247237.stm
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