Apologies for not posting the ad directly this time (couldn't find it on it's own on YouTube) - it starts on this video at 2:08.
I remember loving this ad at the time. I was only 18 and wouldn't even have thought of drinking Pedigree at the time. I'm just a sucker for cod-Victorian humour (as my purchase of this, this and this would suggest). The animation and song style is nicked from the Oscar-winning short Great by Bob Godfrey, which I only realised when I saw it on Channel 4 a year later. Much worse things to steal from, and it's the only beer commercial from the time I can still remember all the words to.
Marston's is not as well regarded in beer circles as it was 20 years ago,. Whether for Fast Cask or "Gobbyhobbitgate" is moot point, but apparently Pedigree is not as good as it was even it's still Brewed The Burton Union Way (and, unlike many things since then, really still is Up Until The Present Day). They still seem to be building new pubs, though, like this one near me. Though it's doubtful they're the type of pub beer fans would really want to venture to.
Remember, it could be worse. They could be like Greene King. Good old John Marston...