Justin Bieber got some heat from his fans in London this week after he reportedly took the stage two hours late for a concert. According to Justin, he was only 40 minutes late and blamed technical issues.  Justin tweeted, "last night i was scheduled after 3 opening acts to go on stage at 935 not 830 but because of some technical issues i got on at 10:10. I was 40 min late to stage. there is no excuse for that and I apologize for anyone we upset. However it was great show and Im proud of that. Im all about the music and the performance and i respect my fans. i never have any intent to upset or let anyone down. and Im not okay with things being exaggerated. once again sorry for anyone upset."  Reportedly, concertgoers expected Justin to start at 8:30 and Justin came on at 10:10.  A lot of fans had to leave early because they had school or work the next day, in addition to the fact that the subway was reportedly going to close.