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Ram raiders have smashed a van into the front of Tiffany & Co jewellery store in west London.
The Ford Transit was driven into the shop in Sloane Street, Knightsbridge, at about 03:00 BST, and thieves on mopeds then took several items.
A Metropolitan Police spokesman said everyone involved fled, leaving the van at the scene.
No arrests have been made and police are appealing for anyone with information to come forward.