The thugs, aware of the value of these timepieces, are robbing people on the street using knives and guns to pressgang victims into handing over their valuables.
Gangs of thieves who steal expensive watches and jewellery have been following celebrities' and influencers' movements on social media before making their move.
A gang of six has been convicted of carrying out a spree of luxury watch robberies in Chelsea and Balham after taking pictures of themselves wearing the stolen timepieces.