Veteran gagsmith Barry Cryer talks to political comedian Mark Thomas in the tag talk show. From January 2005.

Veteran gagsmith Barry Cryer and political comedian Mark Thomas in the tag talk show, where the guest is next week's interviewer.

Based on the original BBC Radio 5 programme of the same name, Chain Reaction is a simple idea of big name stars from the world of entertainment interviewing others whose work they appreciate and admire.

Recorded with an audience, the interviews focus on the life, career and the passions of the interviewee but often prove to be as revealing about the interviewer.

Producer: Tilusha Ghelani

First broadcast on BBC Radio 4 in 2004.