A rooftop demonstration is in progress at the West Oxfordshire polling station where Conservative Party leader David Cameron is due to vote today..

Two men scaled the War Memorial Hall in Spelsbury shortly before 6am and unveiled a banner depicting David Cameron as Lord Kitchener in the famous World War I poster.

The 15ft poster reads: "Britain’s in the Red. Know Your Place. Vote Eton, Vote Tory".

The two demonstrators, one dressed in a straw boater, swigged champagne from bottles.

Police are at the scene.