Angellica Bell, Rebecca Adlington, Abdullah Afzal, Kate Bottley, Patti Boulaye, Brian Bovell, Tyger Drew-Honey, Lesley Garrett, Dev Griffin, Barney Harwood, Stephen Hendry, Jaymi Hensley, Ulrika Jonsson, Henri Leconte, Debbie McGee, Aasmah Mir, Jim Moir, Nick Moran, Julia Somerville and Rachel Stevens.
Previous champions return to help decide who should go through to the semi-finals.
The second heat week sees five more celebrities face three culinary challenges.
The heat's four remaining celebrities fight for two semi-final places.
The third heat begins, with five more celebrities taking on three challenges.
2016 champion Alexis Conran is among those returning to help with the judging.
The final five celebrities face three culinary challenges as the last heat begins.
The battle for the last two semi-final places reaches its climax.
It is the first of the semi-finals, and the best eight cooks remain.
It is the last of the semi-finals, and the six celebrities become four.
It is finals week, and the four remaining cooks continue to battle for the title.
Just two challenges stand between the three remaining celebrities and the title.