David Tomlinson: David Tomlinson. Actor: Mary Poppins. David Tomlinson is best known for his role as George Banks in Walt Disney's Mary Poppins (1964). As a youth he spent a short spell in the guards. He joined the RAF in WW2 where he survived the trauma of a plane crash on his first solo flight due to engine failure, then becoming a flying instructor for the remainder of the war. He began...