Catherine Tate plays a detective who brings her kids to work with her.
Lauren Cooper is David Tennant's nightmare student in this sketch for The Big Night In.
The Ghost of Christmas Past comes to visit Nan, but has a bit of a trouble getting in.
Nan has a rather cunning way of making a bit of extra cash.
Angie arranges an Andrew Lloyd Webber sing-athon in aid of OCD sufferers.
Nan has a rodent problem that needs sorting out.