The Metropolitan Police imposed Section 60 public order measures, giving officers powers to stop and search, in response to the stabbings.

The police officers were assaulted during an attempted arrest of a man suspected of drug dealing.

The Met said 261 arrests were made over the two-day street festival.

Of those, 157 were made on Monday - the last day of the carnival - and included eight people arrested for disorder at the corner of Colville Terrace and Colville Gardens, Notting Hill, in which a 29-year-old man received a serious stab wound.

He is in a stable condition in hospital.

A man was also arrested over the stabbing of an 18-year-old man in Southam Street, Kensington, and six men were held on suspicion of attempted murder following another stabbing.

There were also 38 arrests over suspected drug offences, 24 for public disorder and 15 for possession of offensive weapons.

A 33-year-old police officer and his 35-year-old female colleague were taken to hospital after being assaulted at the junction of Lancaster Road and St Luke's Road at 3.15pm

The man's condition is not life-threatening but it is understood he was unconscious at some stage following injuries to his head and torso. His colleague had torso injuries but was discharged from hospital.

The decision to use the Section 60 and Section 60AA orders was taken by the commander in charge of policing on Monday evening.