Sean Pertwee
From Tardis Wiki, the free Doctor Who reference
Sean Pertwee (born 4 June 1964[1]) is the son of Jon Pertwee, who played the Third Doctor. He briefly appeared as himself in the 50th anniversary story The Five(ish) Doctors Reboot.
He has frequently been asked if he would play the role of the Third Doctor if asked (as a tribute to his father), but has said that he would never consider taking up the part.[2][3] Despite this, he once posted a photograph of himself dressed as the Third Doctor on social media.[4]