Netizens in Britain were enraged when the office of Prime Minister David Cameron posted a photo of him with a red Remembrance Day poppy photoshopped onto his jacket.

The photo, posted on the official 10 Downing Street Facebook account on Monday (Nov 2), is said to be identical to a previous profile picture posted in November 2013.

The doctored image was first spotted by Twitter user Dylan Morris who also shared the original photo.

According to The Independent, a spokesman for Downing Street said they would "look into it", but later said it was "just an oversight".

The profile picture has since been deleted and replaced with an image of Mr Cameron wearing an actual poppy.

Many have taken to social media to express their feelings and show off their photoshop skills.

An emblem for Remembrance Day, the red poppy honours Britain's war dead. It is the anniversary of the day the Armistice was signed to mark the end of the World War I in 1918.