The TV technicians' union today attacked the BBC's decision to invite BNP leader Nick Griffin on to Question Time and pledged to join a demonstration against the recording of the programme.
Bectu said it would support any of its members who refused to work on the programme, which will be transmitted on October 22.
General secretary Gerry Morrissey said: "We believe there should be no media coverage of the BNP and I have raised this issue with the director general, Mark Thompson.
"He said they have been invited on to the programme because they have won elections, but we strongly disagree.
"We will be arranging a demonstration and lobby outside the Question Time studios and we will be working with anti-fascist groups to ensure there is a significant turn out."