portman has been acting since he was 16 years old. his first role was in 2010's "outcast", in which he starred as paul. this was followed by a role in popular scottish soap opera "river city". his second film role was a small part in scottish comedy "the angels' share". it was announced on 24 august 2011 that he was cast as podrick payne in the award-winning hbo fantasy drama series "game of thrones". he portrayed this role from the second season to the final season.. he contributed vocals to a version of the track "jenny's song" that featured in the second episode of the final season of game of thrones.