The name O plc stems from a "phonetic" play on the name of the founder (in French, Haut is pronounced O), and encapsulates the initials of Performance, Leadership and Change, the areas of concentration of its consulting services.
In the logo, O is represented by one version of the Greek capital letter Omega which indicates a purpose of completion and globality (Omega is the last letter of the Greek alphabet: from Alpha to Omega - from A to Z).