Rolex watches worth thousands of pounds have been stolen by a gang using sledgehammers in a smash and grab raid.
The gang of about seven men on bikes smashed their way into the Knightsbridge store at about 10.30am.
Sledgehammers were used to shatter glass display cabinets before thieves swiped about 10 watches.
A police investigation has been launched. Call 101 with information.