Police have launched a four-week crackdown on troublemakers ahead of this year's Notting Hill Carnival.
Operation Razorback began targeting gangs who plan to use the carnival as a venue for violence and criminal activity.
A Scotland Yard spokesman said: "The eyes of the world turn to west London over the August Bank Holiday weekend and the Met works hard throughout the year to ensure Carnival is not marred by crime."
He continued: "Using carefully gathered intelligence, officers will use the next four weeks in the run up to carnival to disrupt those planning trouble and disorder."
At the event itself, there will be a multi-layered policing approach designed to stop those intent on causing trouble getting anywhere near, the spokesman said.
All entrances to the site will have search points to prevent weapons being taken in. There will also be a special focus this year on cracking down on pickpockets.
Chief Inspector Jo Edwards said: "The Met's message is a clear and simple one - come to carnival to have fun and enjoy this wonderful cultural experience, but don't come to cause trouble.
"More than a million visitors went to carnival last year, but there was no serious disorder and there were no firearms incidents for the third year in a row. We work with the community and partners carefully planning throughout the year so there are no surprises for anyone.
"Operation Razorback is a highly sophisticated and detailed operation aimed at ensuring those who set out with the sole intention of causing trouble at Carnival will not succeed."
Director of Notting Hill Carnival Ancil Barclay added: "We are pleased to be working closely with the police to make sure this year's carnival is safer than ever. The message is very clear - carnival is a fun day out and a fantastic tradition but any violence or anti-social behaviour will not be tolerated.
