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Karen Gillan: Obsessive fans, short skirts and life with Doctor Who

And you think getting a doctor's appointment is difficult – try getting one with the Doctor's assistant, flame-haired Scottish actress Karen Gillan, aka Tardis companion Amy Pond. Nine solid months of 11-day fortnights filming Doctor Who in Cardiff, on-call from six in the morning until way past dusk, means that clearing a space in Gillan's diary can seem harder than time travel itself. But now here she is, heeled-up and tottering carefully out of a taxi on to London's Portobello Road.

Elisabeth Sladen: Actress who came to fame as Dr Who's assistant and

As Sarah Jane Smith, the titular Time Lord's assistant in Doctor Who, Elisabeth Sladen played one of the sci-fi programme's longest-running characters, who was voted the Doctor's most popular companion by fans, gained cult status – and was catapulted to her own spin-off series, The Sarah Jane Adventures.