The Great British Bake Off
Mary Berry and Paul Hollywood will return for the sixth series of The Great British Bake Off on 5 AugustBBC/Love Productions/Mark Bourdillon

Grab your ingredients and a whisk because one of the nation's favourite treats is returning to screens tonight (5 August) with Mary Berry and Paul Hollywood kicking off the sixth series of The Great British Bake Off.

With a fresh batch of contestants and a bundle of new challenges in store for the next two months, IBTimes UK has broken down everything viewers can expect from the new series...

When and where can I watch Great British Bake Off 2015?

Series six will launch at 8pm on BBC1 on 5 August, marking its second year on the channel after moving from BBC2 for 2014's season five. Last year's finale, which saw Nancy Birtwhistle crowned the winner, was watched by 13 million people, just a million fewer than the amount who watched the World Cup final that same year.

According to the Mail Online, there will be one extra-special viewer, with Her Royal Highness the Queen reportedly set to tune in. Hopefully, Hollywood will be on his best behaviour.

Watch the series six GBBO trailer:

Are the judges and hosts returning?

GBBO would not be the same without Berry's gentle criticism and her sidekick Hollywood's not-so-subtle innuendos. Both will be returning as judges while the dynamic duo of Mel Giedroyc and Sue Perkins will once again host. Comedian Jo Brand will also be making her second outing presenting The Great British Bake Off: An Extra Slice on BBC2.

Who are the contestants?

Season six boasts a nice variety among the 12 contestants, including: 41-year-old Ian, the Dalai Lama's official UK photographer; child welfare officer Sandy, 49; professional musician Stu, 35; and full-time mother Nadiya, 30.

Judge Hollywood has revealed that the competition is incredibly high in The Great British Bake Off 2015, telling The Mirror: "The contestants push the boat out this year. They are exceptionally good. They are good from the beginning and they are all very professional in the way they attack the food."

Stu from The Great British Bake Off
Stu from The Great British Bake Off is a professional musicianBBC/Love Productions/Mark Bourdillon

What challenges will the contestants face?

Per tradition, there will be three challenges for the contestants to get to grips in each episode and the premiere will see the 12 hopefuls try compete to make the perfect Madeira cake, Black Forest Gateau and Berry's favourite, Frosted Walnut Cake. Ready, steady, bake!