Over the past decade, there have been remarkable support for the Green parties in Britain, as environmental issues have become more popular. Due to the geographical division of Britain, the Green parties of Scotland, the Green party of Ireland, and the Green parties of England and Wales will be examined. Four methodological approaches were utilized to compare the structures of these Green parties in Britain, namely: Origins and development, sociological composition, ideology and policy positions, and organizational structure. However, as independent as the British Greens are, does being in power change the focus of the Greens in Britain? Has it affected the Political Programme? The findings show it has an effect to an extent, but it has not changed the aggregate focus of the Green Parties. Due to their independence, we conclude that the Green parties in Britain have different political programs that are tailored to fit the party’s agenda.