This is a strange one in that I cannot settle it 100%, one way or another.

Back in May 2006 BBC1 had a show, hosted by Terry Wogan, called Boom Bang-a-bang! 50 Years of Eurovision (see the BBC and IMDB).

There was also a show on BBC Radio 2 (R2), May 16^th at 8.30pm (called 50 Years of Eurovision) and one of the contributors was listed as one Jimmy Carr.

It’s on the BBC Genome site (here) with them identifying their data source as Radio Times.

I can’t find any more information (but did find a 2004 Radio Times with an article about him, relating to something else).

For now, I’ll have to err on the side of the BBC site being correct and assume that he did contribute SOMETHING (to the radio show). And I’ll keep searching.