Thomas Sangster (born 16 May 1990[1]) played Tim Latimer in the Doctor Who television stories Human Nature and The Family of Blood and voiced Kyle in the Big Finish Doctor Who audio story The Mind's Eye and a miner in The Bride of Peladon.
He also voiced Ferb Fletcher in the Disney Channel series Phineas and Ferb and portrayed Jojen Reed in the fourth and third seasons of the popular HBO series Game of Thrones and portraying Simon Brown in "Nanny McPhee". He is also known for portraying Newt from The Maze Runner movies, and John Tracy in Thunderbirds Are Go!