The gang riding e-bicycles ambushed the victim, a man in his 20s, when he was leaving a hotel in Stratton Street, Mayfair at 7.30pm on November 21 in 2020.
In the attack, a £25,000 Rolex watch and two diamond rings worth £9,000 each were stolen from the person.
One of the gang members, Alan Kelly, pulled out a large ‘Rambo knife’ and the group got the victim to the ground.
The victim was left shaken but did not suffer any serious physical injuries.
CCTV and mobile phone enquiries led Fly Squad detectives to the gang during their special investigation.
The four members of the criminal gang were jailed for the robbery for nearly 39 years in total following a special investigation by detectives from the Met’s Flying Squad.
Judge Philip Brook Smith QC also issued Serious Crime Prevention Orders (SCPOs) banning them using e-bicycles when they are released - the same e-bikes they used during the robbery.
