The podcast is quite interesting and since its headed by a sort of "all star" cast, this is pretty much the most informative and authentic Ubuntu podcast around.

Downloads of the files are offered in various formats, including .ogg and .mp3 in low and high qualities.
The official website of the podcast is here: www.podcast.ubuntu-uk.org
Subscription links: (use these links on your podcast client)
High Quality:
Audio OGG - http://feeds.feedburner.com/UbuntuUkPodcastOgg-high?format=xml
Audio MP3 - http://feeds.feedburner.com/UbuntuUkPodcastMp3-high?format=xml
iTunes - http://phobos.apple.com/WebObjects/MZStore.woa/wa/viewPodcast?id=276154136
Low Quality:
Audio OGG - http://feeds.feedburner.com/UbuntuUkPodcastOgg-low?format=xml
Audio MP3 - http://feeds.feedburner.com/UbuntuUkPodcastMp3-low?format=xml
iTunes - http://phobos.apple.com/WebObjects/MZStore.woa/wa/viewPodcast?id=276534698

The image which has been used is the Ubuntu UK podcast wallpaper/logo which can be downloaded from here: http://podcast.ubuntu-uk.org/wallpapers/
