Thanks Dutchessy! Funnily enough, my brother rang me yesterday for a chat and asked me if I had heard the programme on BBC Radio 4 about BIA. Of course I hadn't, but now thanks to you I have heard it.
LE - The person with the very strong accent was from Northern Ireland and I'm afraid that even I had difficulty in understanding him! I did understand parts, though, and he was talking about an estrangement between he and his brother, who he hadn't spoken to for many years and his hope that they would be friends before one of them died. Also there was an army chaplain talking about using the song at funerals, etc.
It has made me listen to the song again right away!