In three challenges, set by Paul Hollywood and new judge Caroline Waldegrave, the bakers must make delicious crumpets in the Signature, not panic over perfect piping in the Technical, and recreate their celebrity hero in pastry for their Showstopper.

A new batch of celebs enter the tent. It's spouse and sibling rivalry, as Chris and Rosie Ramsey, and Scarlette and Stuart Douglas take on each other.

The latest batch of celebs tackle loaf cake, meringue towers, and Prue's fancy technical.

Anneka Rice, John Bishop, Nadine Coyle, and Ade Adepitan tackle decorative choux buns and financiers before making a showstopping cake that represents something from their bucket list.

The bakers take on a retro recipe for brandy snaps in the signature, try not to be too cheesy in the technical, and reveal all with a 'my best kept secret' cake showstopper.

The celebs tackle a fruity drizzle cake and a giant biscuit selfie.

Carol Vorderman, Kelly Brook, Rob Rinder, and Mo Gilligan tackle a signature sandwich biscuit, a sweet bread-based technical, and a cake showstopper revealing their favourite guilty pleasure.

Ellie Goulding, Mawaan Rizwan, Sophie Morgan, and Tracey-Ann Oberman make marble cake in the Signature and jam roly-poly in the Technical, before making a showstopping biscuit portrait in honour of their own celebrity hero.

Emma Willis, Clara Amfo, Blake Harrison, and Alex Horne take on decorated biscuits, madeleines and a showstopping choux sculpture which embodies their secret talent.

Mo Farah, Motsi Mabuse, Katherine Kelly, and Ben Miller tackle meringue roulades in the signature challenge, make traditional Italian biscuits in the technical, and render their favourite childhood memory in cake form in the showstopper.

AJ Odudu, Gemma Collins, Jessica Hynes, and Tim Key make sandwich cakes and a classic tart, before recreating their earliest childhood memory in choux.

Deborah Meaden, Jay Blades, Judi Love, and Mike Wozniak make signature cheesecakes, a vegan version of a BBQ classic for the technical, before recreating their first celebrity crush for their showstopper.

A new set of celebs enter the tent for SU2C. Jodie Whittaker, Paloma Faith, Munya Chawawa, and Spencer Matthews make Prue and Paul in biscuit form.

Roman Kemp, Amelia Dimoldenberg, Sarah Beeny, and Maxine Peake take cupcakes to a new level and create memorable romantic dates in biscuit form.

Comedian Johnny Vegas, grime artist Big Narstie, Olympian Katarina Johnson-Thompson, and Labour MP Jess Phillips handle shortbread for their signature challenge, get to grips with a picnic favourite for the technical, and re-create themselves in cake form as their showstopper.

The Bake Off for Stand Up To Cancer is back and first in the tent are Louis Theroux, Jenny Eclair, Russell Howard, and Ovie Soko. Who will be star baker?

Ruby Wax, Gareth Malone, Laura Whitmore, and Yung Filly make signature fruit turnovers and a chocolate fondant technical, and relive their most embarrassing moments in a meringue showstopper.

Kate Garraway, Gbemisola Ikumelo, Phil Wang, and Sophie Willan will be taking on mini loaf cakes in the Signature and things get spicy in the Technical. In the Showstopper the celebrities reveal their hidden talent in choux.

The first batch of celebs make cupcakes, 3D biscuits, and take on a fiery technical.

Jeremy Paxman, Joe Wilkinson, Sally Lindsay, and Georgia Toffolo are in the tent, baking characterful biscuits and 'hobby cakes' as one of them seeks to bag the coveted star baker apron.

The celeb bakers tackle classic eclairs for the signature and puff pastry for the technical, and recreate their biggest fears in a cake showstopper.

Dizzee Rascal, Nick Grimshaw, Philippa Perry, and Reece Shearsmith tackle vegetable slices, a royal technical, and a 'selfie' made entirely from biscuit.

The celebs tackle a savoury pie signature and fiddly French confection in the technical, before recreating their most embarrassing celebrity fail in meringue.

Paddy McGuinness, Coleen Nolan, Joe Thomas, and Ellie Taylor make Jaffa cakes, take the rough with the smooth in the pastry technical, and render their home towns in biscuit for their showstoppers.

Greg James, Fern Brady, Spice Girl Mel B, and Dermot O'Leary take on iced buns in the Signature, a family classic in the Technical and a hilarious Showstopper, where they create their celebrity doppelganger in biscuit form.