The day of reckoning has finally arrived: will Channel 4's take on The Great British Bake Off shape up to the BBC version?

After the broadcaster bought the series for a reported £75 million back in September of last year, there's been plenty of anticipation and concern as to whether the new series can re-capture the magic, especially after the departure of Mel Giedroyc, Sue Perkins, and Mary Berry.

The first episode sees a new legion of amateur bakers take on cake week. Starting off with a "fruity signature challenge", before shifting into the technical challenge, "a children's tea party favourite", and a final challenge in the form of "the trickiest showstopper ever set in the first week of Bake Off: an illusion cake".

Critics have already given the show glowing reviews, especially heaping praise on Noel Fielding, after some vocal critics expressed concerns that he wouldn't fit in with the style of the show.

Here's everything you need to know ahead of the series premiere.

Who are the new hosts?

After former hosts Mel Giedroyc and Sue Perkins stuck by their loyalty to the BBC and departed the show, Noel Fielding and Sandi Toksvig have since stepped up to the roles.

Channel 4 boss Jay Hunt had previously stated Fielding and Toksvig would drop the innuendo-heavy approach that Mel and Sue preferred. "The show is modern in terms of its comic take and a lot of the humour will come from Noel’s surreal twists. There are no soggy bottom jokes," she revealed at the broadcaster's annual report.

Meet The Great British Bake Off 2017 contestants Show all 12 1 /12 Meet The Great British Bake Off 2017 contestants Meet The Great British Bake Off 2017 contestants Kate, 29, from Merseyside A health and safety inspector from Merseyside, Kate also dabbles in blacksmithing, furniture restoration and yoga. She also loves the outdoors. When she's indoors though, indulging in her love of baking, she is a fan of "old-fashioned" baking techniques. She taught herself to bake when she began to grow her own vegetables two years ago. Meet The Great British Bake Off 2017 contestants Liam, 19, from North London Hackney-born Liam has been baking for four years and is fondly known as the 'Cake Boy' amongst his university friends. He believes that baking is a universal language that can bring people together from all walks of life, and he wants to make it acceptable amongst his peers and the younger generation. Meet The Great British Bake Off 2017 contestants Chris, 50, from Bristol A software developer who loves the science behind baking and developing quirky flavour combinations. He is a cancer survivor and passionate about helping other people whose lives have been affected by cancer. He is married (his wife's name is Catherine), and he loves sailing, travelling (especially visiting bakeries) and writing. Meet The Great British Bake Off 2017 contestants Flo, 71, from Merseyside Flo is retired and the oldest amateur contestant to appear on Bake Off to date. She was one of 11 children and was raised in Huyton, Liverpool. She met her late husband Richard when she was 21 years old and working at a sausage factory. Following Richard's death two years ago, her son Stephen encouraged her to take up baking. She bakes treats for his restaurant when she's not baking for the family - or 'having a boogie' with friends. Meet The Great British Bake Off 2017 contestants Steven, 34, from Hertfordshire Despite having a background in marketing, Steven's heart lies in the kitchen. His mum, Judi, has been his cooking mentor. He cooks and bakes all of his own food and has lost an impressive five stone thanks to his own home-cooking. He likes putting a twist on recipes from his mum's old cookbooks. Meet The Great British Bake Off 2017 contestants Julia, 32, from West Sussex Julia has spent three years honing her baking prowess so she could enter Bake Off. She is originally from Kemerovo, Siberia. She met her husband Matt while on holiday in Turkey as a 17-year-old. Meet The Great British Bake Off 2017 contestants Yan, 46, from North London Hong Kong-born Yan moved to the UK with her family when she was two. She started to bake seriously 10 years ago when she found herself in between 24 hour shifts, working as a molecular biologist for the NHS. Currently working as a laboratory research scientist, Yan now lives in north London with her wife, Marian and cat Kacey. Meet The Great British Bake Off 2017 contestants James, 46, from Essex James describes himself as a bald, baking banker - but his friends say he looks more like a bank robber than a banker. He was taught to bake by his father more than 40 years ago and grows his own fruit and vegetables to incorporate into his recipes. James lives in Essex with his wife Ann, sons Oliver and Ethan and their three chickens: Sparkles, Superman and Jeff. Meet The Great British Bake Off 2017 contestants Sophie, 33, from Surrey A former Officer in the Royal Artillery, Sophie did not discover her talent for baking until she volunteered to make a friend's birthday cake. The psychology graduate, who lives in Surrey with her boyfriend and a cat named Loki, has also developed a passion for patisserie. When she is not baking, Sophie enjoys track cycling, rowing, teaching military boot camps and is also training to be a Meet The Great British Bake Off 2017 contestants Tom, 29, from Edinburgh Architect Tom lives in Edinburgh with his partner David, where he can often be found making fresh shortbread for family and friends. Baking has always been a huge part of family life for Tom and his siblings, who were taught to bake by their mother, a home economics teacher. The family cherishes recipe books passed down by grandparents from both sides of the family. Meet The Great British Bake Off 2017 contestants Peter, 52, from Essex Born in Brixton, IT programme manager Peter had a well-travelled youth. He lived in Nigeria from the age of seven and moved back to the United Kingdom when he was 24. He has a wife, Tito and two children - Temi and Toni. He was bitten by the baking bug eight years ago when he started making his own bread. He reckons one of his specialities is making a melt-in-your-mouth Macaron, which is based on a recipe from French pastry maestro Pierre Hermes. When he's not kneading dough he loves running on the beach, spinning, playing chess and badminton. Meet The Great British Bake Off 2017 contestants Stacey, 42, from Hertfordshire Former school teacher Stacey has fond memories of helping her grandmother make bread and butter pudding when she was a little girl, but it was during university that she really started to bake seriously. Stacey likes to incorporate her Jewish heritage into her baking, with a traditional homemade Challah with every Friday night dinner.

It's all part of a slight tonal overhaul of the show, with Hunt teasing: "It’s got a new tone to it; it’s got a new comic riff to it and I think that feels modern and future-facing. So it’s a show that a lot of people love but with a slight Channel 4 spin which is exactly what I hoped it would be."

Who are the judges?

Replacing Mary Berry is new judge Prue Leith, a restaurateur and cookery writer, who joins the returning Paul Hollywood.

What else has changed?

Aside from the new faces, it seems the show will pretty much stay the same as before: the format of both a signature and technical challenge, followed by a final showstopper challenge, will remain.

When/Where can I watch?