Labour candidate Dr Rosena Allin-Khan, who is standing in Tooting, has criticised the Conservatives for releasing a campaign video based on the same idea as hers, which she posted two weeks ago.

Ms Allin-Khan had posted a spoof of a scene from the film Love Actually, when a character uses large, handwritten signs to get a message across to someone on the doorstep.

(In the film, Andrew Lincoln's character is confessing his love to Keira Knightley, who is recently married to another man).

Ms Allin-Khan's video went viral, being retweeted more than 8,000 times.

Tonight, Boris Johnson's team produced their own version of the same scene but with the PM on the doorstep holding signs with his party's slogans, particularly on Brexit.

Again, it's going viral on Twitter, with more than 2,000 retweets in the first hour it's been posted.

Responding, Ms Allin-Khan tweeted: "I won't be retweeting it - but Boris Johnson has copied my #ElectionActually video.

"Tanks. On. The. Lawn. Don't share his version in outrage - instead, share my original version."

Several journalists have also been pointing out that the idea was done originally by Ms Allin-Khan.