Yes,I was interested to catch this,purely by chance,as I rarely listen to Radio 4. A meaningful conicidence, perhaps,as Jung would say.

 Irononically I caught it while hopping channels to escape Gorecki's 'Maaa-ree-a Ma-re-aaaa' which seems to be turning into the 'O for the wings of a dove 'of the 21st century.

I was disappointed that the discussion was so short and superficial. But maybe it was enough to broach it. I suppose many Radio 4 lisyeners haven't thought that composers of famous sacred music can be agnostics,as Verdi and Vaughan Wiliams both were.

I was a little surprised to find Rutter is an agnostic,as I can't recall his writing any secular music apart from the 'Beatles Concerto'  ,a joint effort with Ron Goodwin.

I bet Howard Goodall isn't agnocstic!