Why did radio drama and comedy remain such a strong part of British broadcasting — while largely disappearing from American radio?

In this edition of Kasterborous, Christian Cawley and Brian A. Terranova start with the very different audio traditions on either side of the Atlantic. Along the way, they encounter The Hitchhiker's Guide to the Galaxy, Star Wars on radio, Big Finish, and some almost-forgotten Doctor Who radio productions.

That leads to the peculiar British tradition of bringing television comedy to radio, including Dad's Army, Fawlty Towers and Blackadder.

But why did The Black Adder change so dramatically after its first series? Christian and Brian discuss the huge scale of Rowan Atkinson's original medieval comedy, the reduced budget that helped reshape the programme, the transformation of Blackadder and Baldrick, and whether moving comedy into the studio actually made it better.

There's also Red Dwarf, live studio audiences, Jeeves and Wooster, Not Going Out, Fawlty Towers, panel shows, and the question of why British and American sitcoms developed such different approaches to comedy.

In this episode:

• Why radio drama survived in Britain
• Doctor Who before Big Finish
• The British tradition of comedy on radio
• The Black Adder vs Blackadder II
• What happened when the budget disappeared
• Do sitcoms need a live audience?
• Red Dwarf: Back to Earth
• British vs American sitcoms
• When sitcoms start becoming dramas

Presented by Christian Cawley with Brian A. Terranova.

Kasterborous: Doctor Who, classic television and science fiction conversation since 2007.