I'm Sorry, I'll Read That Again was a long-running radio comedy programme that originally grew out of the Cambridge University revue Cambridge Circus. Many of its large and talented cast went on to find fame in television and the cinema. It had something of a cult following and was broadcast initially on the BBC Home Service (renamed BBC Radio Four in September 1967).

It was first broadcast on April 4 1964 and the eighth series was transmitted in November and December 1973. An hour-long 25th Anniversary show was broadcast in 1989. Humphrey Barclay was the producer until 1968 and from April that year the task was shared by David Hatch and Peter Titheradge.

The first three performers became more famous as The Goodies on British television:

• Tim Brooke-Taylor
• Graeme Garden
• Bill Oddie (important spokesman on wildlife and ecological issues since c.1980)
• John Cleese (became a lead Python and worked on serious business training films). He did his famous silly walk on the programme and it made terrible radio.
• David Hatch (went on to executive roles within the BBC) and
• Jo Kendall (a radio actress in many straight dramas subsequently; also appeared in another popular radio comedy series The Burkiss Way)

Bill Oddie wrote and performed a daft but well-crafted song in the middle of most programmes. Tim perfected a high-pitched feminine voice for the ghastly Lady Constance de Coverlet, who would often arrive at the close of a lengthy adventure to a rapturous audience welcome. John and Jo developed poignant - almost romantic - dialogues as the respectable but dysfunctional couple "John and Mary", a forerunner of the relationship between Basil and Sybil later televised in Fawlty Towers. As with Round the Horne, the cast's adventures would sometimes be episodic with cliff-hanger endings each week as with the "Curse of the Flying Wombat". Christmas specials normally included a spoof of a traditional pantomime (or several combined). They had few qualms about the use of puns - old, strained or inventive - and included some jokes and catchphrases that would seem politically incorrect by the mid 1970s. Graeme's impressions of Eddie Waring (a rugby league commentator) and John's occasional but manic impressions of Patrick Moore (astronomer and broadcaster) built these people into eccentric celebrities in a way that the Mike Yarwood, Lenny Henry, Rory Bremner, Spitting Image and Dead Ringers programmes would do for other TV presenters with similar disrespect many, many years later.

One peculiar aspect of the show was the unchanging sign-off song which Bill Oddie performed as "Angus Prune" which was not a character who ever appeared in the sketches (except in "The Angus Prune Story" aired on 18 April 1966) or, for that matter, anywhere else. Spoof dramas were billed as Prune Playhouse and many parodies of commercial radio (which was only legalised onshore in the UK during this period) were badged as Radio Prune, but the words Angus Prune seemed as random and incidental as the words Monty Python which began on television much later (first transmission October 5 1969). Whilst the BBC radio shows ITMA, Much Binding in the Marsh, Take it from Here and Beyond Our Ken had previously conditioned the audience to accepting a mix of music, sketches and jokes within a 30 minute show, and Round the Horne was currently doing this, ISIRTA (as it was known to its friends), accelerated the transitions and certainly seemed more improvised. It was one of those programmes where you were unlikely to get all the jokes on first hearing so would have to listen to the scheduled repeat (or an illegal tape recording) to discover what you had missed. It thus helped prepare the television audience for At Last the 1948 Show, the Q Series from Spike Milligan and Monty Python's Flying Circus. The only subsequent British radio programmes that approached the pace of ISIRTA are thought to be Radio Active (an endless spoof of commercial radio, starring among others Angus Deayton and Philip Pope; later transferred to television as KYTV); On the Hour (a fierce parody of over-excited current affairs formats by Chris Morris and others; transferred to TV as The Day Today), The Sunday Format and The News Huddlines (Roy Hudd, Chris Emmett, June Whitfield and others). Some of the cast also appear in the radio comedy quiz show I'm Sorry I Haven't A Clue, which was originally a spinoff from ISIRTA but has outlived it by decades.

Since December 2002, examples of ISIRTA can be heard on Fridays at 12.30 and 19.30 hours GMT on BBC 7 (http://www.bbc.co.uk/bbc7) (available on the web, digital radio and digital television).

See also

• List of Comedic Catchphrases