Lily Allen's brother Alfie is to star in the London production of Equus, taking over the lead role from Daniel Radcliffe. The 21-year-old actor was recommended for the role by the play's writer William Shaffer who was impressed after seeing Allen's performance in this year's (07) Atonement alongside Keira Knightley. The play will begin a nationwide tour of the U.K. in January (08).