Police overseeing Europe's biggest street festival were hoping for a peaceful climax to the Notting Hill Carnival today despite at least two stabbings.

Hundreds of thousands of revellers are flocking to the capital for the carnival's headline day.

Bank Holiday Monday sees a parade of floats and brightly-dressed performers snake their way through the streets of London as part of the annual Caribbean-inspired celebration.

Yesterday's festivities were largely peaceful but one 20-year-old man was left in a serious but stable condition after being stabbed in the back and buttocks in Ladbroke Grove.

Metropolitan Police said a 14-year-old boy was slashed with a sharp object in Golborne Gardens.

And a 16-year-old girl was also treated but discharged herself from hospital after sustaining what police described as a superficial leg wound in Wornington Road.

An extra 2,000 police officers will be drafted in to support the event today, bringing the total to 7,000.

Scotland Yard arrested 96 people yesterday, mainly for drug and public order offences as well as robbery and assault.

Officers have been granted stop and search powers within the area where the carnival takes place, while the force has advised visitors to only use mobile phones when absolutely necessary.

Commander Christine Jones said: "Mobile phones, especially expensive ones, are a glittering prize for thieves.

"Don't give them a head start by displaying them openly and only use them if it's absolutely necessary. Pick up one of our maps instead and pre-arrange meeting points with family and friends."

Three men were stabbed in a fight in North Pole Road - close by but outside the carnival's footprint.

Scotland Yard said two men were arrested and one was left in a critical condition.

Rows of African food stalls, dance stages and sound systems will line the route of the vibrant procession with a number of after-parties keeping the carnival fever pumping until the early hours.

Although some showers are predicted, forecasters said London will be mainly dry with sunny spells throughout the day.

Yesterday, young performers with huge grins, covered in feathers, jewels and waving flags, danced their way along the sunny route to the sound of steel drums and calypso music to cheers from huge crowds.