The show has made the 2008 edition of Guinness World Records after selling 645,457 copies of their first two series between March 2006 and March 2007.
The book says the DVD sales have netted £2.8 million – though its not known how much have that has gone to David Walliams and Matt Lucas.
In another category, Sacha Baron Cohen can claim the most lucrative mockumentary, with Borat grossing $157,470,996 worldwide.
