A knife was recovered from the scene

Pair knifed in London double stabbing as police deal with unlawful raves

Police have now been granted extra powers to break up groups larger than two

Firework 'fired at Liver Building' as Liverpool fans celebrate Premier League win

Dame Cressida Dick

'Consequences will follow' for those who attack police during illegal London parties

Around 140 officers have been injured in the past month

'Consequences will follow' for those who attack police during illegal London parties

Liverpool building

LFC condemns 'wholly unacceptable' fan behaviour after firework fired at Liver Building

Investigators at the scene after the attack in Reading

Reading attack victims each died from single stab wound - police

Armed police shot the male suspect after the attack in Glasgow

Glasgow attack: Knifeman shot dead by police after stabbing six people in hotel

Police and investigators at the scene in Glasgow

Knifeman injures six men, including police officer, in Glasgow before being shot dead

Police pledged to crackdown on illegal raves

Police attacked as officers break up more illegal raves across London

Police have cracked down on illegal music events across the capital

Police attacked at illegal music event in Notting Hill amid rave crackdown

Bibaa Henry (left) and Nicole Smallman were stabbed to death in a London park.

Two Met police officers arrested over 'inappropriate' photos of murder victims

Two teenagers have been arrested

Two teenagers held on suspicion of manslaughter after death at Lullingstone Castle

Police clashed with the public in Brixton last night

'Utterly vile scenes' after Brixton party chaos with police attacked and threatened with sword

Videos on social media showed chaos in the south west London suburb

'Utterly vile scenes' as 22 police officers injured after Brixton party chaos

Emergency Services rushed to the scene in August

Teen to be sentenced for attempted murder after throwing child off Tate balcony

The shooting happened on Caythorpe Street in Moss Side, Manchester, on Sunday morning

Manchester shooting: Man killed at party previously lobbied MPs about youth violence

An officer deployed a Taser at the man who was charged with various offences

Investigation into man tasered in front of young son 'could take six months'

A man was arrested on suspicion of having the weapon, police said

Man 'armed with machete' sparks evacuation of Birmingham's Bullring shopping centre