Bakers attempt three challenges each week trying to impress the judges enough to go through to the next round and eventually are crowned Britain's best amateur baker.
It's Cake Week and the bakers put their twist on the classic Battenberg, face a turning-out technical challenge and pay tribute to their heroes in the showstopper
It's Biscuit Week and the bakers make a sophisticated fruit, nut and chocolate combination for the signature, produce two tropical technicals, and create an elaborate table setting showstopper
It's Bread Week, and the remaining bakers have a lot to prove in a sweet and savoury signature, a technical that honours the NHS, and an ambitious, artistic showstopper.
It's Chocolate Week and the bakers tackle a deceptively simple traybake signature, a technical packed full of chocolate and nuts, and a white chocolate celebration showstopper.
It's Pastry Week and the bakers put their stamp on a Cornish classic in the signature, go retro in the technical, and make a showstopping classic tart hidden within a cage.
It's a Bake Off first - Japanese Week - and the bakers tackle steamed buns, a layered technical and a showstopper inspired by kawaii, the Japanese love of all things cute.
It's 1980s Week, and the bakers put their twist on the classic quiche in the signature, tackle a retro treat in the technical, and keep their cool with an ice cream showstopper.
It's Dessert Week, and the bakers tackle a miniature cheesecake signature, a 17th-century technical and a showstopping jelly art dessert cake, for a place in the semi-final.
It's the semi-final. The bakers' patisserie skills are tested in a booze-soaked signature, a tricky technical and a delicate showstopper showcasing their finesse and precision.