will.i.am, Sir Tom Jones and Olly Murs returned for their ninth, eighth and third series, respectively, as coaches.
Due to the COVID-19 pandemic, the semi-final and final of the competition, originally meant to air on 28 March and 4 April, were postponed until November 2020.
However, Trainor digitally coached from the United States because of travel restrictions due to her pregnancy and the ongoing pandemic.
On 26 September 2019, it was confirmed that will.i.am, Sir Tom Jones and Olly Murs would return to the show as coaches for their ninth, eighth and third series, respectively.
[1] Trainor expressed her excitement at joining the coaching team and commented, "It's a dream come true and I can't wait to sit in the chair with my own button and listen to some incredible new talent!