Harry Lloyd
From Tardis Wiki, the free Doctor Who reference
Harry Lloyd played Jeremy Baines and Son of Mine in the Doctor Who story Human Nature / The Family of Blood.
He is also well known for playing the part of Will Scarlett in the first two seasons of BBC's Robin Hood from 2006-2007 and Viserys Targaryen in the first season of HBO's Game of Thrones. He is the great-great-great-grandson of Charles Dickens.
