The Old Grey Whistle Test 1973, the show changed to an entirely live format. On 23 February 2018, the BBC broadcast a special programme, hosted by Bob Harris, to mark the 30 years since the legendary series was last broadcast. This live studio show featured music, special guests and rare archive footage. It featured performances from Peter Frampton, Richard Thompson, Albert Lee and others. Bob Harris chatted to Whistle Test alumni, including Dave Stewart, Joan Armatrading, Ian Anderson, Chris Difford and Kiki Dee, as well as fan Danny Baker. The programme hosted many seminal acts of the era, including the first British TV performance of
The Old Grey Whistle Test of the show as part of "Rutland Weekend Television" in 1975, featuring Eric Idle as Harris, is the first known mention of the fictional band, "Toad The Wet Sprocket" – a later reference on a Monty Python album gave rise to the real-life band of the same name. The parody also featured "all-dead" musician Stan Fitch, whose silent, motionless performance was treated with quick zooms, close-ups, and other visual effects typical of shows like "Whistle Test". The show was parodied on an episode of "The Benny Hill Show", originally aired on 24 September 1975, being called "Old Grey Whistle Tester".