Yes, I'm a bit surprised it hasn't ended up as a play on Radio 4 yet.
Some of Derek & Clive, let's be honest, is tired drunken drivel. You have to wade through the rubbish to get to the odd gem or two. Although Miller is a pompous highbrow arts nob, he was right I think in saying D&C was the worst of a great double act who had become jaded and cynical and ruined by booze and fame.
Cook didn't know he was creating a niche product that would be celebrated by many, he was just living out his alcahol driven breakdown in the only way he knew how. The 2nd album was probably a commercial decision to cash in on the success but the first was just an obsessive act by Cook. Remember his obsession with recordings and destroyed tapes.
It's more than a bit ironicic that his bitterness at the BBC would drive him on to produce recordings that became nearly banned, but ended up instead being his most listened to work, and more or less resurrected his career.