A new ITV quiz show will be giving away the 'biggest prize in British TV history' this week - that even viewers at home can get a slice of. 

Win Win with People's Postcode Lottery saw hosting duo Mel Giedroyc and Sue Perkins back together on screen as it launched in September. 

The former Great British Bake Off presenters lead the action in the interactive quiz show, where alongside contestants battling it out in the studio, viewers at home can also play for prizes. 

Cars, holidays and sporting experiences have been up for grabs throughout the competition so far for those who make it through the rounds of survey-style questions based on answers from the British public. 

But players are tested with the ultimate decision once they've bagged a prize: do they risk it all by trading their prize to join Millionaire's Row, which will see one lucky winner take home at least a million pounds at the end of the series. 

Speaking to The Mirror ahead of the show finale, Sue, 55, teased: ‘Saturday’s show really is going to be a night like no other. 

'The prizes are phenomenal – Ashes tickets, holidays, cars, a brand-new kitchen... and there is one million pounds!’

She continued: ‘The thrilling thing, of course, is that all of this is going to be won by one person, and that person might even be a viewer turned contestant, who simply signed up, joined in from their sofa and got the surprise of their life.’

Co-host Mel, 57, added that while the lucky winner could bag £1million, they can also keep their other prizes, including all the luxury experiences up for grabs. 

In total, the prize pot is worth an eye-watering £1.5million. 

It puts the gameshow in joint first place for the biggest winnings on a UK gameshow, beating Ant McPartlin and Declan Donnelly's former series Red or Black?.

The series, which last aired in 2012, saw contestant Graham Fletcher pocket £1.5million after correctly guessing the spinning roulette wheel would land on black.

It places ahead of Ant and Dec's Limitless Win, which to date has had top winnings of £1million, and Who Wants To Be A Millionaire? with its £1million jackpot prize. 

It comes after a Win Win contestant fought back tears after scooping a life-changing £20,000 jackpot in a tense episode that kept both the studio and viewers at home on the edge of their seats.

By the end of episode three, it was down to Rosie S. and Shyanne in the race for a jackpot worth £20,000.

The decisive question asked contestants to identify the top entry in a survey on 'The Top Ten Things Brits Lose the Most'.

The options were Phone, Umbrella, Glasses, Keys, Socks, Charger, Jewellery, Headphones, Wallet and Remote Control.

Rosie S, who had performed strongly throughout, went first and confidently chose Phone.

But while common, it was revealed to be only the fifth most-lost item, leaving the door open for her rival.

Shyanne then stepped up with her answer: Keys. 

The studio erupted as it was confirmed to be the number one response, securing her the £20,000 prize on the spot.

Overcome with emotion, Shyanne wiped away tears as Mel and Sue congratulated her with an embrace, while the audience applauded the dramatic win.

The victory also guaranteed Shyanne a coveted place in Millionaire's Row - alongside other contestants and viewers who will return for the high-stakes finale.

Win Win airs at 7:30pm on ITV1 this Saturday and is available to stream on ITX.