Abstract The research explores the relationship between national political ideologies and policy and legislative changes in national English town and country planning. English national planning policy making is theorised as being partly driven by ideological contestation. The research contributes to the understanding of the nature of the policies this process produces, and how it is that the English planning system has become a 'wicked problem' for national policy makers. The analysis focuses on two periods: the ‘1947 system’ period and the early post-2010 Conservative-led Coalition government period. The ‘1947 system’ period has been selected as it is a key phase in the institutionalisation of English town and country planning into a formal institution of the state. The early Coalition government period has been chosen for analysis as it is the most recent period of significant institutional change. Both of these periods are contextualised through a discussion of developments in politics and planning in the preceding decades. The research shows that the institution of national English town and country planning is intimately connected with concepts which are deeply prone to ideological contestation (such as liberty, property and the state), and that these competing contestations influence competing visions for the form and structure of the institution. This ideological quality of ‘thinking about planning’ means that its institutionalised form is inherently prone to change. The research proposes a theory for the analysis of ideology and ideas as they relate to institutional change, and offers an account of the power of ideology to define the limits of politically acceptable thought, and thus shape policy and legislative programmes for English planning. The contribution of this research is towards an understanding of why ideologies have shaped the institution of national English town and country planning over time.

中文翻译：

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自由、财产和国家：英国城乡规划制度的意识形态

摘要 本研究探讨了国家政治意识形态与政策与国家英语城乡规划立法变迁之间的关系。从理论上讲，英国的国家规划政策制定部分是由意识形态争论驱动的。该研究有助于理解这一过程产生的政策的性质，以及英国规划系统如何成为国家政策制定者的“棘手问题”。分析集中在两个时期：“1947 体制”时期和 2010 年后早期保守党领导的联合政府时期。选择“1947 体系”时期是因为它是英国城乡规划制度化为正式国家机构的关键阶段。选择早期的联合政府时期进行分析，因为它是最近一次重大制度变革的时期。这两个时期都通过对过去几十年政治和规划发展的讨论来进行背景化。研究表明，国家英语城镇和乡村规划制度与极易引起意识形态争论的概念（如自由、财产和国家）密切相关，这些相互竞争的争论影响对城市形式和结构的竞争愿景。该机构。这种“思考规划”的意识形态品质意味着其制度化的形式天生就容易发生变化。该研究提出了一种分析与制度变迁相关的意识形态和思想的理论，并提供了意识形态的力量来定义政治上可接受的思想的界限，从而塑造英国规​​划的政策和立法计划。这项研究的贡献是为了理解为什么随着时间的推移意识形态塑造了国家英国城镇和乡村规划的制度。