An annual competition where volunteers are put through their paces, until week by week as bakers are knocked out, a winner emerges.  They do it for fun as well.  Amazing
 

Four anxious faces

At the end of the bake

One of them's buggered
Her Opera Cake
Three of them to stay
One of them will go
Only Paul and Mary
At this stage really know

They all line up
In front of Sue and Mel
Who do that bloody pause
Before they finally tell
If I'd have been the loser
I'd want to take a basin
And with just sufficient force
Smash those fat smug faces in

Three of them smiling
One of them gone
Final next week
The pressure is on
Oh what a fuss
They all do and make
In that jolly facile
Great British Bake