 For "The Five Doctors" – the show's 20th anniversary special – Carole Ann Ford, Nicholas Courtney, Elisabeth Sladen, Lalla Ward, Wendy Padbury, Caroline John, Richard Franklin, John Leeson and Frazer Hines reprised their roles as, respectively, Susan Foreman, Brigadier Lethbridge-Stewart, Sarah Jane Smith, Romana, Zoe Heriot, Liz Shaw, Mike Yates, K-9 and Jamie McCrimmon.The special was broadcast between the twentieth and twenty-first seasons.Davison, Fielding and Strickson continued on until Fielding stepped down from the role in "Resurrection of the Daleks".