The Peace Tax Campaign is urging Iraq war protesters to demand that the tenth of their tax bill that goes to the military be spent on peace-building initiatives instead.
The organisation lobbies for conscientious objectors to have the right to opt-out of military funding.
"The war was fought not with vast numbers of troops but with vast amounts of taxpayers' money," said a spokesperson. "We hope some of those people will now turn to other ways to demonstrate their resistance to being forced to pay for others to kill on their behalf."
The organisation is asking people to send a Peace Tax Return Form to the Inland Revenue, and offer support to protester Robin Brookes, who was due in court yesterday for refusing to pay 10 per cent of his tax bill.