Clean Bandit ’s Grace Chatto says she was livid when the BBC banned her from wearing a Jeremy Corbyn t-shirt at its music event.

The cellist was asked to change out of a Corbyn Nike tick top at Radio 1’s Big Weekend earlier this year so the Beeb were not accused of bias.

“I was annoyed,” says Grace, a proud Corbynista. “The BBC has people talking about their own ­politics on the channels – it’s just that they can’t be biased.

“It was like I wasn’t allowed to express myself. It wouldn’t have been them representing Corbyn.

“It did seem like there was a bias. I don’t know if it would have been the same if my t-shirt had said Theresa May .”

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Before Grace got changed, she had already recorded a message to those at the One Love Manchester gig while wearing it.

The BBC aired the footage, but blurred out the Corbyn logo. Grace adds: “Later, it was fine because of all the press that the blurring out got.”

A BBC spokesman said: “We have editorial guidelines during election periods around non-political programming, and ­occasionally we need to request guests or performers make a change to their outfit.”

Multi-platinum selling Clean Bandit and grime stars including Stormzy backed the Labour leader during this year’s election campaign, and have been ­credited with encouraging a high youth turnout.

(Image: PA)

Grace explains Corbyn’s appeal: “He is a huge champion of the arts and music, and that’s something that’s really important to all of us.”

During last month’s party conference, Grace gave a rallying speech at the Young Labour event, and tells 3am she is proud that the musicians have helped “do away with the ­prejudice that politics is for old white men only” and engage younger voters through their support of the Labour leader.

But she admits: “I was really nervous about it as I’d never really given that sort of speech – I felt a bit naked without the cello.”

Reunited with her instrument, she released Clean Bandit’s new single I Miss You yesterday – a collaboration with Justin Bieber ’s mate

Julia Michaels.