This paper calls for a re-evaluation of how church adaptation is understood and valued within architectural and religious studies. Accounts of church adaptation have typically focused on stylistics and the primacy of individual architects, privileging aesthetic judgement over broader social meaning. This paper advocates for a more expansive framework that situates church buildings within evolving socio-economic, political and cultural contexts in order to extend our understanding beyond the moment of creation to encompass changing usage and consequent adaptation. The paper highlights the undervalued social dimension of post-1945 developments in ecclesiastical architecture in England, such as dual-purpose churches and church centres, before examining strategies deployed in the adaptation of historic Anglican churches to accommodate worship alongside secular function. By foregrounding secular function and the role of church communities, it will demonstrate that architectural practices of the post-1945 period in relation to church buildings have been shaped by shifting circumstances including urban change, welfare restructuring and the evolving relationship between the Church of England and wider society. Through two London case studies, namely St Matthew's (Brixton) and St Mary's (Barnes), the paper explores differing models of community engagement from experimental, grant-dependent interventions to participatory design processes shaped by local demographics. These examples reveal how factors such as funding structures, economic context and community stability have influenced both architectural outcomes and long-term viability. Ultimately, the paper reframes adaptation not as a compromise or failure, but as a vital and creative process central to the continued relevance of historic Anglican churches in England. In doing so, it calls for a reassessment of architectural value that recognises buildings as dynamic entities embedded in social life.