name a few cast members who worked in the program?
Kenneth Horne, Kenneth Williams, Hugh Paddick, Betty Marsden and Bill Pertwee
Round the Horne
Round the Horne is a BBC Radio comedy programme starring Kenneth Horne, first transmitted in four series of weekly episodes from 1965 until 1968. The show was created by Barry Took and Marty Feldman, who wrote the first three series. The fourth was written by Took, Johnnie Mortimer, Brian Cooke and Donald Webster.

Horne's supporting cast comprised Kenneth Williams, Hugh Paddick, Betty Marsden and, in the first three series, Bill Pertwee.
what is round the horne? A BBC Radio comedy program who is the director of the program? UNANSWERABLE when was the last season aired? 9 June 1968 who hosted it? Douglas Smith
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Round the Horne [SEP] Introduction
The show was the successor to "Beyond Our Ken", which had run from 1958 to 1964 with largely the same cast. By the time the new series began, television had become the dominant broadcasting medium in Britain, and "Round the Horne", which built up a regular audience of 15 million, was the last radio show to reach so many listeners. Horne was surrounded by larger-than-life characters including the camp pair Julian and Sandy, the disreputable eccentric J.Peasmold Gruntfuttock, and the singer of dubious folk songs, Rambling Syd Rumpo, who all became nationally familiar. The show encountered periodic scrutiny from the BBC management for its double entendres, but consistently received the backing of the director-general of the BBC, Sir Hugh Greene.