The Song Fight Bulletin Board

Hey, just found out today that three of the Terry Pratchett Discworld books were adapted to radio-plays for BBC4. Possibly also played on BBC7 (?). These include, according to [censored]:
"versions of Wyrd Sisters, Guards! Guards! (narrated by Martin Jarvis) and Mort."
I couldn't find any info about procuring these anywhere about. Can anybody in the UK illuminate me on whether it's possible to find recordings of these anywhere?
thanks!
-bill

Check these out

http://www.harperacademic.com/catalog/b ... 0060823453

http://www.faqs.org/faqs/pratchett/merchandise-faq/

Amazon, the on-line bookstore, seems to be pretty comprehensive in
their listing of Pratchett merchandise. The American branch
<URL:http://www.amazon.com/> sells the "Wyrd Sisters" video for USD
34.95 and DVD for USD 35.99, the "From the Discworld" CD for USD
17.97 and most of the Pratchett books, including the more recently
released editions.

the first one's a book-on-tape which is fun, but not hard to find here. the "from the discworld" i did not know about, but it seems to be music "inspired by" the books. i'm interested in the dvds, but haven't decided to get them yet... maybe i'll put them on my christmas list.
all that said, a kind soul located something i could listen to to answer my original question... rock!
-bill