A total of 802 gang offenders are in custody according to the latest data released by the Met. A further 101 gang offenders are subject to ASBOs, gang injunctions or other court orders and 105 have been released from prison with licence conditions.
These restrictions can have a range of conditions, including restricting who gang members can associate with, where they can go and even put restrictions around their use of mobile phones.
More top news
The men were detained as part of an investigation by MI5 and the Metropolitan Police's Counter Terrorism Command.
Frankie Grande was due to perform at Bush Hall in London on Saturday.
Tom Bosworth can walk faster than most of us can run.