The Canadian star was greeted by enthusiastic followers when he touched down at Heathrow's Terminal 5.
Guarded by security, the 18-year-old made his way through the airport as fans attempted to get close to him, with one managing to reach out and stroke the back of his head. Meanwhile, one 'Belieber' was left in tears, seemingly overwhelmed by his arrival.
Tweeting this afternoon, Bieber wrote: "Wow. Airport was crazy getting to London! All worth it for my beliebers. Some people always tryna ruin it for the fans. Not today Swaggy (sic)."
Over the weekend, it was announced that the 'Boyfriend' star will perform at Capital FM's Summertime Ball, being staged in Wembley Stadium on June 9.
Bieber releases his new album Believe in June. Listen to current single 'Boyfriend' below:
> Justin Bieber tweets message to alleged baby mother Mariah Yeater