A survey of 486 officers who work at the event finds 28% have been assaulted and 88% feel unsafe.

Mussie Imnetu worked under Gordon Ramsay and Marcus Wareing and was in the UK on a business trip.

Almost 2,000 items have been confiscated from shops across Notting Hill, a west London council said.

The event in Notting Hill included a shucking competition for the speediest sheller.

Assistant Commissioner Matt Twist says not enough stewards mean crowd control is the "biggest risk".

Omar Wilson, 31, is accused of murdering Swedish chef Mussie Imnetu near Notting Hill Carnival.

Detectives launched a murder investigation when Mussie Imnetu died in hospital days later.

Both deaths are now being treated as murder investigations, say police.