Hundreds of protesters greeted Israeli Prime Minister Binyamin Netanyahu outside Downing Street as he met Gordon Brown.
Police detained a number of people in the crowds, and activists waved Palestinian flags and banners which said “Free Palestine”.
The protesters attempted to block the entrance to Downing Street, where security was tight as members of the press arrived for a briefing with both politicians.
The Israeli PM held talks with Gordon Brown after meeting Jewish leaders this morning. He will meet US special envoy to the Middle East George Mitchell for four hours of talks tommorrow.