Good Morning Britain Guest cast, played by Dr. Sarah Jarvis Episode 2020-03-03: 03/03/20 (Mar 3, 2020) Episode 2020-12-21: 21/12/20 (Dec 21, 2020) Episode 2020-12-22: 22/12/20 (Dec 22, 2020) Episode 2020-12-23: 23/12/20 (Dec 23, 2020) Episode 2021-01-29: 29/01/21 (Jan 29, 2021)