The new series of Great British Bake Off will begin with a reference to judge Prue Leith’s mistake of revealing last year’s winner before the final was aired.

Leith, 77, was in Bhutan when she tweeted her congratulations to Sophie Faldo, hours before the final.

The TV baking competition returns to Channel 4 next week for its second series on the broadcaster since its switch from the BBC.

The Great British Bake Off judge Prue Leith
Last year, Prue Leith tweeted the name of the winner before the final aired (Mark Bourdillon/Love Productions)

In the opening scene of the first episode, hosts Noel Fielding and Sandi Toksvig appear dressed as characters from the 1980s film trilogy Back To The Future.

The skit see Fielding wearing a white coast and mad professor wig as inventor Doc Brown, while Toksvig dons a body warmer to take off the films’ hero Marty McFly.

As the pair jump into a silver car to travel through time, they jokingly reveal they are trying to stop Leith from publicly revealing the identity of this year’s winner.

Viewers will then see Leith and fellow judge Hollywood sitting on a sofa with Leith apparently preparing to send out a social media post on her phone.

Ahead of the new series, Leith revealed: “They didn’t propose it they just did it! My reaction would have been, I wouldn’t dare mention this for a whole year and then you go and use it.

“Now everybody will start brining it up again. Sure enough, I’m getting people saying to me ‘tell me about the results’.

Hollywood revealed he also had a joke at Leith’s expense while filming the new series.

The Great British Bake Off 2018 talent
The show’s presenters and judges from left, Noel Fielding, Sandi Toksvig, Prue Leith and Paul Hollywood (Mark Bourdillon/Love Productions)

He said: “The best thing was the World Cup was on. England were playing and we had to leave the tent because I wanted to go back to watch the match.

“I had my fingers in my ears going ‘la la la’. I was going to get home before Prue, so I said I’m going to text you the score before you get back!”

The new series will begin with biscuit week. Contestants will be tasked with baking a Wagon Wheel in the technical challenge.

For their “showstopper” task, the 12 hopefuls will also be asked to create a biscuit selfie of themselves at a place which has personal meaning to them.

It has also been confirmed that during the show’s latest run there be a vegan challenge to reflect the diet’s growing popularity in the UK.

A blood courier, a civil servant and house and techno DJ and a retired air steward are among those hoping to impress the judges.

The Great British Bake Off will return to Channel 4 on August 28 at 8pm.