Buy a promotional bottle of Carex hand wash (1 pound) or Carex shower gel (3 pounds) and hand it in at the gate of Alton Towers, a Sealife centre, Warwick Castle, or Sanctuaries to receive a 50% discount on your ticket. The promotional bottles are available in Asda, Boots, Morrisons, Ocado, Sainsbury's, Savers, Tesco, Waitrose and Wilko until September 2019 and can be redeemed until 31st of May 2020.