'NIGHT 2 at the 02 is gonna be even better. get ready. thanks. We have also made adjustments to the set times to have me go on earlier for the coming shows. see u there.'
Despite his public apology, Justin was slammed on Twitter for his 'disgusting behaviour', which saw him finally arrive on stage to a chorus of boos at 10.23pm.
He said: 'Keeping the fans waiting for two hours is an absolute disgrace. Isabella got to bed at after one in the morning and then had to get up for school this morning.
'And I know that at least two or three children have actually missed school today because they couldn't cope with the late night.'
It was also reported that Bieber cut his set by 30 minutes to coincide with time constraints.