Page "The Hitchhiker's Guide to the Galaxy (radio series)" Paragraph 47

A 3-CD set of the Tertiary Phase was released in mid-October 2004, before the final episodes were broadcast.

These CDs contain extended material, previously cut to make 27-minute episodes for radio.

A 2-CD set of the Quandary Phase was released at the end of May 2005, and a 2-CD set of the Quintessential Phase was released at the end of June 2005.

Both sets again include material that was originally cut for reasons of timing.