a tune recorded off tv in the UK

this is a tune recorded off tv in the UK - it was used in a trailer for TV doc in sept 2008 about people that disappeared. when they use music its usually off recently released albums, so the music almost certainly dates from about 2006-2008.

I just love this music & am desperate to get hold of it!

I only have a 20 sec sample & have no idea whether it is representative of the whole thing.

many thanks in advance to everyone who listens, even more thanks to anyone who can ID it!

regards,
mark.

PS... sorry, just realised I already posted this a while ago. maybe the repost will pick up some new listeners!