Legislative policy-making appears to be result of a confluence of factors streaming from an almost endless number of tributaries: national experience, contributions of social theorists, clash of powerful economic interests, quality of Presidential leadership. With appropriate substitutions, and with some changes of emphasis due to different constitutional situations, the description holds good for legislative policy-making in Britain. The legislative policy of any one government is derived from a variety of sources. Traditionally, the formal device of the electoral mandate has been taken to explain sources of policy. Two major factors affect the development of legislative policy in Britain. The first is the fragmentation and dispersal of political forces that has already been noticed as a marked characteristic of the British political system. But on the other hand the electoral competition between the parties which has been a marked feature of British politics since 1945 and the consequent need to gain the widest support amongst the electorate has led to considerable.