Ned Dennehy (born 8 December, 1965) is an Irish actor in British, Irish, and American films and television. In addition to his role as Mider in Mystic Knights of Tir na Nog, he has also appeared in films including Blitz, Harry Potter and the Deathly Hallows - Part 1 and the independent British feature film Downhill. Additional television work includes RTÉ's Damo and Ivor and BBC dramas Parade's End, Luther, Peaky Blinders, and the leading role of Letters Malloy in Banished and Dickensian.