This publication will take the reader on a Darwinian journey of discovery; we will examine the principles of designing classification schemes with particular emphasis on the idiosyncrasies of the financial sector. Classifications, taxonomies and typologies in general use (including the likes of ISO 10962, Bank of International Settlements OTC classification and ISDA Taxonomies) and those proposed or under development (e.g. Harmonization of the Unique Product Identifier - Dec. 2015) are explored. An investigation is undertaken as to the appropriate mechanisms for representing classifications and how they can be deployed. The potential impact on product design in the light of the new regulatory frameworks (Dodd-Frank and EMIR in particular) is investigated. The reader should bear in mind that, "All regulatory roads lead to data" and this publication is the Killer App for grappling with the minefield of financial instrument and product classification - the latest must have Sat Nav.