"Bring back our Bieber"

Justin Bieber fans have been marching through the streets of London.

It's all to show their love for their idol and to try and convince the teen-star to return to the UK.

His last appearance on these shores was at Capital's Summertime Ball.

The organisers, Hasti and Gulcan told us their aim was to get Justin to announce another UK tour.

Hasti and Gulcan

See more pictures of the Bieber fans

At the moment Bieber is in Hollywood where he's stunned hundreds of youngsters with an amazing charitable act.

The 16 year old was a guest of honour at Variety's Power of Youth event in Hollywood and took the opportunity to hand over hundreds of tickets to his sold-out concert in L.A. on Monday to five good causes.

He sent a series of tweets about the event...

"Best part was I got to surprise the charities being honoured. My show tomorrow at the Staples Center in L.A. is sold out but we saved 500 tickets to give 100 each to each charity being honoured to give to kids in need and let them have a fun night they deserve. I know what it's like to have some tough times so I hope those tickets make u kids coming smile a little. Gonna be a fun show."