The pretty brunette who has been the constant companion of Daniel Radcliffe in recent weeks has been identified.
She is Olive Uniacke, the 19-year-old step-daughter of David Heyman, the multi-millionaire producer of the Harry Potter films.
According to a friend, 21-year-old Daniel – worth an estimated £42 million - and Olive have known each other a long time and were close a few years ago, although their relationship ran its course.
Since then they have remained good friends and, according to the source, have grown close again in the last few months.
"Olive has money in her own right so is certainly not a gold-digger," the pal told a British newspaper. "But Dan's not traditionally her type. She has usually gone for bad boys and Dan is quite preppy."
According to the Daily Mail, Olive studied at Gordonstoun school in Scotland and at the French Lycee in Kensington, where Madonna's daughter Lourdes is a pupil.
She is the daughter of Robie Uniacke - a London society figure who recently dated Rosamund Pike - and Rose, an interior designer.
Recently she has been working alongside Daniel as a set PA on the final Harry Potter film.
"Olive is a lovely young lady – and she and Dan have been close for a long time," a colleague said.
"She was always in and out of his dressing room during filming and she has always been really protective over him."
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