The final of The Voice UK on ITV on Sunday night was overshadowed by a stage intruder and star Tom Jones saying the F-word live on air.

Twenty-one-year-old hotel work Mo Adeniran was crowned the winner of the music competition, but his victory wasn't the only talking point on the night.  

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As Adeniran learned he was through to the final part of the show, a stage invader wearing a baseball cap appeared to try to hold up a piece of paper for viewers to read but he was removed by security staff.

Moments earlier, coach Tom Jones was heard saying "f*** me" as his act, Into the Ark, had made it through to a singing showdown with Adeniran. 

Host Emma Willis apologised for the expletive.

Adeniran looked stunned when Willis later announced that he had been voted the winner of the 2017 series.

He thanked his mentor, singer and Oscar-winning actress Jennifer Hudson, for her support as confetti fell around him and he was hugged by his fellow contestants.

"An amazing thank you to the most phenomenal person I have ever met, thank you Jennifer," he said.

Adeniran took the title following blistering performances of Paolo Nutini's Iron Sky and Unsteady by X Ambassadors.

Mo Adeniran wowed the crowd at the finale on Sunday night. Pic: Twitter/TheVoiceUK

He had been the bookies' favourite coming into the final, where he beat fellow contestants Michelle John, Jamie Miller and runners-up Into the Ark.

But the singer said all the hopefuls had "done amazing" in the series.

John, from coach's team, was knocked out during Saturday night's programme after losing out in the public vote.

Hudson's contestant Miller fell by the wayside during Sunday night's show, with his rendition of Ed Sheeran's Shape of You not proving to be enough to carry him into the final round.

The last challenge saw Adeniran and Into the Ark go head to head to sing for the title.

Jennifer Hudson coached Adeniran to victory

Adeniran's stirring performance of Unsteady had Hudson struggling to contain her emotions.

Blinking back tears, she told him: "Mo, we feel your heart."

He won praise from all the coaches, with Gavin Rossdale gushing: "You have the voice of a generation."

Into the Ark served up an impressive rendition of Not a One by The Young Wild in a bid to secure the coveted Polydor recording contract.

It went down a storm with their coach Jones, who said they had been "tremendous".

Tom Jones was proud of Into the Ark's performance in the finale

"These two boys are unique," he told the audience.

"There is nothing around them like this at the moment ... they are original."

But in the end it was not enough to stop fans' favourite Adeniran from taking the title.

He is now headed to the studio to record his winner's EP.