If you’re an eligible young actor worth £42million, you might well worry about gold diggers.

But Daniel Radcliffe has little to fear on that front. For the young lady he has been seen with of late, is used to a little luxury herself.

Olive Uniacke, 19, who was pictured with the Harry Potter actor on his birthday trip to Russia and in London with him, is the stepdaughter of David Heyman, the multi-millionaire producer of the Harry Potter films.

And hers is more than a brush with celebrity. Her father, Robie Uniacke, is a renowned figure in London society, who has most recently been dating actress Rosamund Pike.

Her mother, Rose, is a renowned interior designer. A friend explained: ‘Olive and Dan have known each other a long time, ever since the Harry Potter films started.

‘They were close a few years ago but the relationship fizzled out then.