The prime minister has been forced to leave a location in Buckinghamshire after a group of tractor-driving protesters descended on his visit and staged a loud demonstration. <br /> <br />Keir Starmer was visiting a housing development to announce his plans to build new towns across England when a number of vehicles showed up. <br /> <br />The tractors, brandishing placards reading 'Back British Farming', could be heard sounding loud musical horns while the prime minister attempted to speak to construction workers at the site. <br /> Report by Kennedyl. Like us on Facebook at http://www.facebook.com/itn and follow us on Twitter at http://twitter.com/itn
