More than half a million people descended on west London yesterday to take part in Europe's biggest street festival - the Notting Hill Carnival.

By mid-afternoon more than 500,000 revellers were on the streets enjoying the annual parade, music and dancing, police said.

Police reported a relatively peaceful day with just 28 arrests recorded since midnight, not all necessarily within the event area.

Chief Insp Rod Charles, the Metropolitan Police's spokesman for the event, said: "It's going very well. We're just over three-quarters of the way into carnival and so far so good.

"We've had 28 arrests since midnight, not all in the carnival area. There's other activity and operations going on out-side the carnival area.

"The arrests have been for various offences like conspiracy to supply drugs, public order and theft.