The thesis surveys and analyses Commonwealth Bills of Rights. It examines the content of these Bills of Rights and considers their origin and political implications. The first chapter reviews the political history of Bills of Rights generally. This is followed by a chapter dealing with the initiation and introduction of Commonwealth Bills of Rights. Particular attention is given to the attitudes and influences of British officials and advisors. The third chapter considers the general forms of Commonwealth Bills of Rights and the ways in which such guarantees are qualified. The next three chapters examine the substance of the particular guarantees and note judicial cases that are of particular interest. In the seventh chapter some of the political implications of these Bills of Rights are considered. The eighth chapter concerns judicial attitudes toward the enforcement of a Bill of Rights. This is followed by concluding remarks.