This time the celebs face a blondies signature challenge, a testing technical, and the opportunity to reveal their secret passion with a cake showstopper.

The celebrity bakers tackle topped flapjacks for the signature challenge, a tricky technical, and make their 'happy places' out of meringue for the showstopper challenge.

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.

Bake Off's back as Daisy Ridley, Rob Beckett, Alexandra Burke and Tom Allen make millionaire shortbread, a fruity tart and their pet hates in cake form.

James McAvoy, Anne-Marie, David Baddiel and Dame Kelly Holmes make signature decorative tarts and a savoury technical, and render their spirit animals in cake form in the showstopper.

Danny Dyer, Rhod Gilbert, Leigh Francis and Yinka Bokinn attempt miniature biscuit people in the Signature and a fancy tea-time classic in the Technical, before recreating their biggest failure in cake form for the Showstopper.

The celeb bakers tackle scones, a devilish technical, and a self-portrait croquembouche.

The celebs face an 'all or muffin' signature and a not 'as easy as pie' technical. And dreams may turn to nightmares during the showstopper cake challenge.

James Blunt, Alison Hammond, Alex Jones and Joe Sugg tackle decorated traybakes, a classic British staple and an impressive biscuit scene depicting what they wanted to be when they grew up.

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

Stacey Dooley, Jade Thirlwall, KSI and Katherine Ryan make cocktail-flavoured fondant fancies and have their pastry skills tested, before creating a showstopping biscuit and meringue scene.

Matt Lucas dons an apron to bake alongside DJ Annie Mac, Ed Gamble and rapper Example as they tackle signature stained-glass biscuits, a jam-packed technical, and showstopping cakes that showcase what they did before they were famous.

Oti Mabuse, Gabby Logan, David O'Doherty, Suzi Ruffell take on an ice cream roll Signature challenge and a kids' party favourite in the Technical, before creating their biggest fear in meringue form for the Showstopper.

The celebrity bakers take on three challenges - brownies, a 3-D biscuit, and a technical challenge that is quite a handful.

The celeb bakers tackle roulades for the signature, a tricky technical, and make their favourite place in the form of a cake for the showstopper.

Actor David Morrissey, comedian Lucy Beaumont, Olympic medal-winning diver Tom Daley and radio presenter and cancer survivor Adele Roberts attempt a savoury quiche signature, a technical teatime biscuit and a showstopping day off in cake form.

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.

Noel Fielding and Alison Hammond welcome Joe Locke, the Rev Richard Coles, Adam Hills and Sara Cox into the tent. Under the watchful eye of judges Paul Hollywood and Prue Leith, the contenders must take on Signature biscuit bars, grapple with pastry in the Technical, and recreate their famous best friend for their 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.

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

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.

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?