I've tried checking http://www.commercialbreaksandbeats.co.uk
but there are just TOO many VW Golf adverts for me to figure out which one you mean. Have a look there yourself.
Do a quick search on "VW" (without the quotes) to get all the VW adverts. The site will tell you the year of the advert, the music used, and a very brief description of what the advert is actually advertisting.