As the title indicates, this thesis is concerned with a thorough investigation of the 'phonematic', 'phonotactic' and 'para-phonotactic' sub-systems of Southern Standard British English from the view-point of the theory of Axiomatic Functionalism. Like a sonata, this work is divided into three PARTS, and each PART is divided into a number of Chapters. Some of the Chapters are further divided into yet smaller Sections for simplicity reasons. PART I, which comprises eight relatively short Chapters, prepares the theoretical background to the actual descriptive account in PARTS II and III. The Axiomatic-Functionalist (henceforth A.F.), views with respect to notions like "phoneme", "distinctive features", "position", "the relationship between phonology and phonetics", to mention but a few, are evaluated in Chapters 2, 3, 4 and 7 and briefly compared with analogous ideas deployed and propagated by other linguistic schools of thought.