Chain Letters was a British television game show produced by Tyne Tees. The show was filmed at their City Road studios in Newcastle Upon Tyne and first broadcast on ITV in the United Kingdom from 7 September 1987 to 6 July 1990, then again from 2 January 1995 to 25 April 1997.

Three contestants competed to win money by changing letters in words to form new words. Its original host was the late Jeremy Beadle, followed by Andrew O'Connor, Allan Stewart, Ted Robbins, Vince Henderson and Dave Spikey.

Three lucky contestants put their pop culture knowledge to the test to complete iconic, People Puzzler crosswords. The player with the most points at the end of three rounds wins the game and goes on to play the "Fast Puzzle Round" for an enormous cash prize.

The Common Denominator is a quiz show that has aired on Channel 4 since 18 February 2013. The programme is hosted by Phil Spencer.