podcasts in British accents

I need links/resources where I can download podcasts in various British accents. My prefer choice would be those accents which are clear and easy to understand. Any help regarding this would be greatly appreciated. Thanks a bunch!

http://www.bbc.co.uk/radio/podcasts/directory/station/

Lots of RP here, along with a sprinkling of Estaury, Cockney, Scottish and Welsh.