Former boxer Chris Eubank will not be charged over an anti-war protest in London, police have said.
Eubank now plans to target Gordon Brown
The former world champion was arrested in February when he drove his truck around Whitehall in protest at Prince Harry's possible deployment to Iraq.
"No further action will be taken on the advice of the Crown Prosecution Service," said a police spokesman.
Eubank, 40, from Sussex, is to drive his seven-tonne truck to Whitehall on Tuesday as he continues his campaign.
He was held by Metropolitan police on 22 February for allegedly breaching the peace, driving without due care and attention, and staging an unauthorised protest.
He had been driving his truck bearing a banner stating: "Blair, don't send our young prince to your catastrophic illegal war to make it look plausible."
Eubank, of Upper Drive, Hove, East Sussex, has since emblazoned his truck with a new message appealing to Gordon Brown, the prime minister in waiting, to withdraw troops from Iraq.
"Mr Brown, you know that the US policy in Iraq cannot succeed," reads the message.
"Democracy cannot be exported with a gun. You can be the great leader and peacemaker."