Hound will be presenting a half-hour weekly magazine programme called What's So Funny?, which will look at comedy around the world, and will feature interviews with guests, reviews and previews. The series will begin at 10am on Friday 8th April.
Hound said that: "There are so many programmes that give a weekly round-up of everything in the world of comedy; it's hard to know how we'll really differentiate ourselves. Well, let me ask you this question - when was the last time you heard news about Jimmy Carr being read by a man who can bench press almost 100 kilograms? Well, tell your future self to stop worrying, I'm on my way."
Radio 7's Comedy Club lineup will survive the move to Radio 4 Extra, broadcasting between 10pm and midnight every evening except Saturdays. The 'club' broadcasts a range of comedy programmes from the mid-1980s to today. Osho will be presenting the Comedy Club on Sunday nights, Smith between Monday and Thursday, and a selection of special guests on Fridays.
Smith commented: "Having worked a lot on Radio 4 it seems only right to do Radio 4 Extra. I shall enjoy listening to some prime radio comedy, some of which I know and some of which I'm looking forward to hearing for the first time (and maybe nicking the best jokes from). I shall also enjoy catching up with fellow comics and wearing some silly hats."
Osho will also be presenting Sneaky Peaks, which will feature previews of Radio 4 and Radio 4 Extra comedies broadcasting in the week ahead. She said: "I'm delighted to be joining the Radio 4 Extra team. I want nothing more than being on in the background when people are doing stuff... like a really smiley stalker."
Other new programmes include The 4 O'Clock Show, a daily hour-long mix of comedy, stories, quizzes and interviews hosted by Mel Giedroyc. On Mondays it will encompass a Sneaky Peaks repeat.
It has already been announced that Radio 4 Extra will be broadcasting 45-minute extended editions of satirical comedy shows The News Quiz and The Now Show, at 22:00 on Fridays. Meanwhile, Comedy First will broadcast premiere episodes of selected Radio 4 shows in advance. The first of these will be Arthur Smith's Balham Bash at 10am on Tuesday 5th April.
Other features and programmes from Radio 7 will be kept for Radio 4 Extra. These include the station's signature lineup of classic comedies, which will be broadcast at noon and 19:00 daily, and the summer return of Newsjack, the satirical sketch show starring Miles Jupp that anyone can write for.