Peter Davison has revealed there could be another family member taking on the role of Doctor Who.
The actor's daughter Georgia Moffett is engaged to ex-Time Lord David Tennant and Peter, who played the role from 1981 to 1984, says his grandson could be next in line.
"My nine-year-old grandson Tyler (Georgia's child from a previous relationship) has ambitions of being the Doctor," he told the TV Times.
"There are an awful lot of young people lining up to play that part, though, so it may be difficult."
Peter is also granddad to David and Georgia's baby daughter Olive - and admits the Doctor Who connection is "bizarre, but very nice, too".
He added: "I don't quite think of David as my son-in-law yet but the correlations are quite extraordinary, I think.
"In a way, the reason they got together was that Georgia was never intimidated by the whole Doctor Who thing - what was new about that to her? It's been a big part of her life."
Peter plays Crown Prosecution Service director Henry Sharpe in the new series of ITV1 show Law & Order: UK.
He said of the character: "He's a fairly regular, good guy - I haven't found any dark side to him yet."