Hey, did you know that David Tennant’s grandparents were the original Posh n’ Becks? No, neither did he. He does now, though, courtesy of Who Do You Think You Are? – the BBC history series which takes one celebrity each week and helps them trace their family tree.

This week it’s the turn of Doctor Who’s David Tennant, whose search takes him from Scotland to Ireland as he discovers that his grandfather, Archie McLeod, was a star footballer who married a beauty queen. Barbara Windsor and Colin Jackson have already traced their roots, but David Dickinson, Nigella Lawson and Jeremy Irons are all still to come.