Not even new host Alison Hammond can tempt her back.
Hammond will co-host with Noel Fielding.
Radebe, who grew up near Johannesberg, spoke about dealing with bullies and bad times at school.
It's no surprise the cook was unfamiliar with the alternative comedian.
The champion of The Great British Bake Off 2022 has been declared.
Even host Noel Fielding said all the bakers had disappointed with their pastry skills.
The star addressed the episode in an interview.
Love it or hate it, custard was the star this week.
The TV chef won 'The Great British Bake Off' in 2015.
Scary challenges and shocking flavours arrived in the tent.
Who kept things sweet in the Bake Off tent?
Who had a stand off with Paul Hollywood this week?
With two contestants off sick, the judges decided it would be unfair to send anyone home, despite some pizza flops.
Paul Hollywood's favourite week saw the bakers step up to the plate.
Student Maisam, 18, kept it too simple, finishing her Showstopper biscuit decoration long before the other bakers.
Who crumbled under the pressure of biscuit week?
The star said he got so big he 'couldn’t really fit on the screen anymore'.
The food producer had been responsible for creating technical and signature challenges for the hit baking show.
Charity director Will was the first baker to be sent home after failing to make buttercream in two rounds.
Find out who has judged and presented the contest over its 13 series on air.
Season 13 is here - get up to speed with what's happening in the tent this year.
The show returns later this month.
The 13th season is coming soon...
The 2018 'Bake Off' finalist wore an orange dress and married in front of an Elvis impersonator.
The Scottish finance student had shared a video on social media of himself holding hands with a man while on holiday.