http://www.enjoycountrylife.co.uk/upto.php [click "Watch Ad 2"]
"Do I buy Countrylife butter because it supports our hardworking British dairy farmers?" he asks, walking alongside a haggard prole. "No! It's their career choice!" Then he whisks away, a facetious dig at England's work-opportunity structure.
The commercial is essentially one for Lydon/Rotten, and the butter seems incidental.
-B.