Hmm, having Googled, I'm not sure what the foul bilge was other than it said Marstons. Perhaps EPA. I don't think I've ever liked Pedigree either for that matter, but if foul, stale-tasting bilge of the worst sort. I've not had a beer that bad since the inlaws served me a can of Mansfield bitter that went out of date in 1977. Mansfield bitter is close to undrinkable when fresh. Three decades in the can doesn't improve it.
Having just perused the Marston's web site, seriously chaps, you called a beer 'Pearl Jet.'