This was published as Occasional Paper 65 by the RCGP in 1994. Although it has been widely cited and was for many years listed as a useful learning resources in the MRCGP curriculum statement "On being a GP" it is out of print. All the RCGP Occasional Papers have been given to Pub Med, but they have posted them as separate PDFs and search engines tend to show just the first section - in this case The Preface by Prof Sir Denis Periera Grey .
The RCGP is taking this up with Pub Med but meanwhile they have sent me a PDF of the whole work which I have uploaded here. For those who prefer to read on a kindle, Kobo or similar I have also created e-book formats from my original files