The atheist is A. C. Grayling; the bishop is Richard Harries. This is the second of three 45-minute radio programmes "in which an atheist and a bishop come together to apply their own philosophies to the experiences of people they meet, with Jane Little chairing the discussion."
http://www.bbc.co.uk/programmes/b00m1nm2
The highlight is a visit to a London Academy faith school to talk with three of the students - a Muslim, an atheist and a Roman Catholic - and A. C. Grayling asks the Muslim what will happen to the atheist when she dies. They also speak to Samantha Stein, director of Camp Quest UK.
For UK listeners the audio can be streamed for a few days from the BBC iPlayer:
http://www.bbc.co.uk/iplayer/console/b00m6ggf
For those beyond the reach of iPlayer (or after the stream expires) a 40 Mb mp3 of the programme is available from RapidShare:
http://rapidshare.com/files/272317918/The_Atheist_and_the_Bishop_-_Episode_2.mp3
The Camp Quest segment is also featured at their website:
http://www.camp-quest.org.uk/news/cq-atheist-and-the-bishop/
UPDATE: As is my wont with such stuff, a couple of days before posting I emailed this to RD.net, and it's now in their newsfeed:
http://richarddawkins.net/article,4237,n,n
So What's Up With PUFAs Chemically?
58 minutes ago