He only touched down in London a few hours ago, but already teen heathrob Justin Bieber has had to fight off a mass of fans and paparazzi in London today (Sept. 12).

The 18-year-old Canadian singer, who is visiting the British capital for two days to promote his new book Just Getting Started and album Believe, left from the Langham Hotel where he was staying, to greet his fans for five minutes, posing for photos and signing autographs.

However, the 'Boyfriend' hitmaker ended up having to shove a few photographers as he made his way to his waiting limousine, accompanied by bodyguards.

Check out more photos of Justin in London below…..

Justin Bieber Gets Hounded By Paparazzi & Fans In London