I'm Sorry I Haven't a Clue on a 2012 show which featured Victoria Wood. A 2013 episode featured a round of "Useless Celebrities", a parody of "Pointless Celebrities", and featured Richard Osman as the co-presenter (this was broadcast three years before Osman appeared on the panel). A 2017 episode featured a spoof of "The Chase" which featured Anne Hegerty, one of the Chasers from the show. On one occasion Humph announced that they had a very distinguished actor as a guest who would join in the game of Mornington Crescent. When the game started, after great ceremony, the penultimate player, the last of the panellists, won
I'm Sorry I Haven't a Clue regular feature on the programme, preceding the game Mornington Crescent, is a fictional letters section which begins with the chairman's comments ("I notice from the sheer weight of this week's postbag, we've received a little over no letters" and "I see from the number of letters raining down on us this week that the Scrabble factory has exploded again"). The invariably single letter each week is from "A Mrs Trellis of North Wales", one of the many prompts for a cheer from the audience, whose incoherent letters usually mistake the chairman for another Radio 4 presenter or media personality. "Dear