Of Naked Trip, Parker says "Impey is a natural onscreen, but this dry, talky, short feature does him no favours." He certainly prefers Zombie Lover: "the best overall entry by a country mile, offering a bit of romance and a weirdo Nazi subplot pired with some competent backyard zombie action."
There's a third BHR title in the pack (which was released last September) too: Will Metheringham's The Photographer, described as "awful - wth the exception of a tidy, understated, electronic score." The non-British films in the set are Scarlet Fry's Junkfood Horrorfest, A Season in Hell, The Brisbee Cannibal Club and Fetish Dolls Die Laughing. Parker recommends avoiding this set at all costs but frankly I'm sold!
You can find Psychopaths and Maniacs on Amazon.com for about eight and a half bucks. I piked it up from Play.com for four quid with free postage. Bargain!