Police are investigating a poster depicting a Union flag in flames that was put up at a bus stop in London, less than 24 hours after the terror attack at Westminster.

The image, which was placed at the bus stop on Ladbroke Grove, west London, has been taken down and it is not known who put it up or for what reason.

Paul Pavli, 54, who was travelling into central London around 11am when he spotted the poster, posted a picture of it on Twitter.