Great British Bake Off is back for a new series which will see amateur bakers take on baking challenges each week.

The judges, Paul Hollywood and Dame Prue Leith, and presenters Matt Lucas and Noel Fielding will return to the well-known tent ready to see some signature, technical and showstopper bakes.

Here's everything you need to know:

How to watch Great British Bake Off 2021

The Great British Bake Off starts on Channel 4 on Tuesday September 21, 2021 at 8pm.

The Great British Bake Off 2021 line-up

The new series will see 12 new bakers including a Met Police detective, a software developer, a psychology student and a trombonist.

Bake Off revealed its 2021 contestants with a short video on Twitter, writing: “Please give a warm welcome to the Bake Off Class of 2021! #GBBO”

Amanda is a 56-year-old Met Police detective who lives in London. Her baking is influenced by her Greek-Cypriot heritage and she enjoys cold outdoor swimming.

Chigs, 40, is a sales manager from Leicestershire with a love of skydiving. He started baking during lockdown in 2020 using online tutorials and his speciality is intricate chocolate work.

Crystelle, a 26-year-old client relationship manager from London, enjoys singing in a choir. She likes experimenting with flavours textures inspired by her Portuguese-Goan-Kenyan heritage.

Freya is a 19-year-old psychology student from North Yorkshire, making her the youngest baker in the tent this series. Her speciality is vegan baking.

George, a 34-year-old Shared Lives co-ordinator from London, takes inspiration for his baking from his Greek-Cypriot heritage like Amanda. He loves his Japanese dancing Spitz dog Eli.

Giuseppe is a 45-year-old chief engineer from Bristol and he loves architecture and gardening. He inherited his love for baking from his father who is a professional chef.

Jairzeno is a 51-year-old head of finance in London and moved to the UK from Trinidad 15 years ago. His speciality is Caribbean spices, and he loves combining guava with chocolate.

Jürgen is a 56-year-old IT professional from Sussex, who moved over from Germany 18 years ago. He loves playing the trombone and his speciality is precision baking.

Lizzie is a 28-year-old car production operative from Liverpool, who loves experimenting with flavour. She also enjoys samba dance.

Maggie is a 70-year-old retired midwife and nurse from Dorset who loves canoeing, kayaking and sailing. She is the oldest competitor in the programme this year and she specialises in traditional bakes.

Dorset Echo: GBBO judges Paul Hollywood and Dame Prue Leith with presenters Matt Lucas and Noel Fielding (PA)GBBO judges Paul Hollywood and Dame Prue Leith with presenters Matt Lucas and Noel Fielding (PA)

Rochica is a 27-year-old junior HR business partner from Birmingham. Her speciality is Jamaican flavours, and she turned to baking when she was unable to dance due to injury.

Finally there is Tom, who is a 28-year-old software developer from Kent. He loves amateur dramatics, and said that baking was a wonderful escape during lockdown.

What is the theme this week?

Series 12 of the Great British Bake off will begin with Cake Week where contestants will be expected to bake cakes using a variety of techniques.

What prize will the winner get?

On some British cooking shows like Masterchef, the winner receives a cash prize but this is not the case for the winner of the Great British Bake Off.

Instead, they receive a branded cake stand and a bouquet of flowers, which viewers would have seen in most GBBO finals.

However, it doesn’t stop there because winners of the show often go onto receive some big opportunities, helping them to launch a new career.

Some winners have been seen to write their own cookbooks or make appearances on TV and radio, some have even created their own show.

Previous winners such as Nadiya Hussein and current Strictly Come Dancing contestant John Whaite are just two examples to have gone onto greater things.

The new series of the Great British Bake Off will start at 8pm on Channel 4 on September 21.