In view of widespread agreement that there is something seriously wrong with the traditional model of parliamentary democracy in the United Kingdom, this article examines the reasons why the emphasis continues to be placed upon the 'parliamentary' rather than the 'democratic' dimensions of the phrase 'parliamentary democracy'. In doing so, it identifies the Westminster model as a set of norms, values and meanings prescribing legitimate government, and examines the extent to which UK governments still invoke this model to legitimise their actions. Three specific challenges to the Westminster model are examined - the operation of policy networks; the increased significance of judicial review and the impact of the Human Rights Act 1998; and th...