Thomas McDermott, 24, and George Fitzgerald, 17, raced through the streets of Chelsea, west London, looking for wealthy victims before jumping off their bikes and attacking Heather Mitchell.

Hiding behind fearsome masks, the criminals brag about the ease of stealing £600 iPhones from oblivious London commuters, comparing to it ‘stealing candy from a baby’

Derryck John (pictured), now 17, has been named by Judge Noel Lucas QC after admitting attacking six moped riders with acid in just 90 minutes across London last year.

This is the violent gang who brought chaos to the streets of London. They stole phones, tablet computers and caused damage worth more than £1 million using hammers, knives and even a gun.

A gang of knife-wielding moped robbers led by a talented teenage singer have been locked up for more than 13 years after attacking morning commuters across South London.

Police in London hope the agile BMW bikes will be able to go after the thieves who disappear down alleyways or traffic-clogged streets.

This is the moment knife-wielding moped thugs stole gold necklaces from the throats of two women in a violent robbery that also left an elderly man with head injuries in Croydon, south London.

Sadiq Khan insisted the police must be granted greater freedom to pursue the perpetrators of the ‘reckless’ and ‘frightening’ snatch crimes that can involve the throwing of acid.

MPs, police chiefs and victims have called for the law to change to stop brazen thieves on mopeds who pull off their helmets during a chase so police would be blamed if they fall and hurt themselves.

The liquid spray being used by the Metropolitan Police tags clothing and objects with a unique chemical footprint which is only visible under ultraviolet light.