The sixth series of the British version of The Masked Singer premiered on ITV on 4 January 2025, following a Christmas special episode on 26 December 2024. Joel Dommett returned as the show's presenter, whilst Mo Gilligan, Davina McCall, Jonathan Ross returned as panellists, along with Maya Jama who replaced Rita Ora on the panel. The series is the first in another two-year commissioning by ITV and was also accompanied by a digital spin-off show for the second time, titled The After Mask, presented by Harriet Rose.
The series was won by singer/actress Samantha Barks as "Pufferfish", whilst singer Gregory Porter finished second as "Dressed Crab" and singer Marti Pellow finished third as "Wolf".
The commissioning of the sixth series was announced by ITV in October 2024, as part of a further two-year contract. Filming for the series began in September 2024 at Bovingdon Studios in Hertfordshire, with the public being invited to apply for tickets to be in the audience, before concluding in October 2024. The series began airing on 4 January 2025, following the show's Christmas special episode that aired on 26 December 2024. It was also confirmed that the show would be accompanied by a digital spin-off show for the first time, The After Mask, presented by Harriet Rose and airing exclusively on ITVX and YouTube.
Prior to the series airing, it was announced that Joel Dommett would return as the show's presenter, with Jonathan Ross, Davina McCall, Mo Gilligan all returning to the panel. Rita Ora was confirmed to be leaving the show after five series, with Maya Jama subsequently being announced as her replacement.
Mo Farah served as a guest panellist for the first episode after being revealed as "Giant Joel". Vicky McClure, Suranne Jones, and Tom Daley served as guest panellists for the second, third, and fourth episodes respectively. Gilligan was not present during the semi final and final of the series, filling in for Gilligan were Richard E. Grant and Danny Jones (who won the previous series as "Piranha").
The twelve costumes for the sixth series were released on 7 December 2024. Also, an additional character, Giant Joel, based on presenter Joel Dommett, was introduced in the 2024 Christmas special, and was unmasked and revealed as Mo Farah in the first episode.
Theme: Summer Holiday
Theme: Superheroes
Official ratings are taken from BARB, utilising the four-screen dashboard which includes viewers who watched the programme on laptops, smartphones, and tablets within 7 days of the original broadcast.