Police will use a new facial recognition system at Notting Hill Carnival this year in a bid to spot criminals.
Officers from Met Police will be trialling the system to identify wanted offenders using cameras, flagging up any matches with their database.
The overt cameras scan the faces of people passing by.
Following a large number of arrests in previous years, the police database contains a large number of images of individuals who are banned from the carnival.
If a match is made using the system, officers will be alerted and will speak to the individual, verifying their identity, before making an arrest if necessary.
There will also be highly-skilled officers who can recall offenders after seeing them in person or on file, known as "super recognisers", will be monitoring the event live from a CCTV control room.
These officers will seek out anyone who has bail conditions which prohibit them from attending the event, and identifying offenders committing a crime.
The threat level for London has been set at "severe" for "some time", and remains so for the 2016 carnival.
Superintendent Williams added: "If you know of anyone who is planning to use this exciting and vibrant event as a cover for crime or violence then let us know and help us keep it safe for you.
"Call Crimestoppers anonymously on 0800 555 111 and tell us what you know."
You can keep up with the latest from this year's Carnival by following our Live Blog .