John Lithgow, Jon Richardson, Hannah Cockroft, Russell Brand

E1

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

James Acaster, Russell Tovey, Rylan Clark-Neal, Michelle Keegan

E2

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.

Johnny Vegas, Big Narstie, Katarina Johnson-Thompson, Jess Phillips

E3

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.

Jeremy Paxman, Joe Wilkinson, Sally Lindsay, Georgia Toffolo

E4

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.

Krishnan Guru-Murthy, Caroline Flack, Greg Wise, Nicola Adams

E5

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