I don't know what advert you mean, probably because I tune off in perfume ads and the like, but your best bet is probably to check out
http://www.commercialbreaksandbeats.co.uk
if you can remember the name.
My brother runs the site from work as he doesn't have a computer running at his place at the moment, and so I'm not really sure how up to date he keeps all the listings, but there's a lot of very new stuff there, and even if you can't find it in the database someone on the forum there might know what one you're after. They're clever like that!