More than 30 people have been arrested in police raids ahead of Notting Hill Carnival.
Thirteen people were arrested in Lewisham in south-east London, while another 18 were taken into custody in Kensington and Chelsea – the borough where the annual Carnival takes place.
A series of homes across Wandsworth, Westminster, Fulham, and Hammersmith were also searched.
The raids and arrests were the result of an intelligence-led operation conducted by Metropolitan Police.
It comes as part of a crackdown against knife crime and drugs conducted by the police force, and the early morning arrests were due to suspected intent to supply drugs at the event.
If those arrested are bailed, they will be forbidden from attending the carnival as part of their bail conditions.
Chief superintendent Robyn Williams, the Met's spokesman for Notting Hill Carnival, said the operation had been intended to prevent trouble at the event over the bank holiday weekend, and said the Police would be “uncompromising” in the resolve to ensure safety.