Luke John Roberts is a British/Canadian actor from Suffolk, England. After his early roles in the ITV soap opera Crossroads and the Sky1 series Mile High, he became known for starring as Joseph Byrne in the BBC One series Holby City and Woodes Rogers in the Starz series Black Sails. He played Ser Arthur Dayne in the sixth season of the HBO series Game of Thrones and led the Global series Ransom.