pbr Doctor Who star Matt Smith has been linked with model Daisy Lowe after the pair were photographed together holding hands.br ppbr The 27-year-old Time Lord has been in California for the Coachella music festival, where he was snapped with the rock chick, sparking rumours they are an item.br ppbr However, Daisy's spokeswoman has insisted: "They're not dating, they're just having fun."br ppbr She also revealed: "They know each other through mutual friends."br ppbr Model Lowe has previously dated Will Cameron and superstar DJ and producer Mark Ronson.