Catherine Tate is one of the most successful comedians Britain has ever seen. Her hilarious characters are some of the most iconic in the comedy world, from sweary Nan Taylor, who's based on a real life pensioner Catherine met while still a student, to Bernie the incompetant Irish nurse and Essex couple Paul and Sam to Derek Fay.
But there is one that is not only one of Catherine's most loved creations, she's even spawned her own place in the Oxford English Dictionary - the ultimate petulant teen, Lauren Cooper.
And for one night only Catherine will be bring the grumpy schoolgirl - and her catchphrase 'am I bovvered' - back to life for the small screen for the BBC's Big Night In.
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