The so-called "British Airways Flight Operations Department Notice" is a fabrication from the mid 1970s created by a BOAC pilot, who circulated it in a slightly different format as part of an unsuccessful campaign against the merger of BOAC, BEA and several other smaller carriers into British Airways. I have all the original files from that period.
The 'spoof' BA handling SOP can hardly be described as a complete fabrication. Having been forced to adopt this SOP many years ago, it quite accurately describes the monitored approach procedure, albeit in a deliberately convoluted tongue-twisting fashion. And yes, the wording was indeed based upon a typical Ronnie Barker sketch.