This article addresses issues of regulatory convergence and Europeanization
as they have developed within the agrochemicals sector. Taking the United
Kingdom as a case study, the article considers the continuing importance of
local and national factors within systems that are ostensibly internationa
l and standardized. In particular; the article shows how the embedded socia
l relations of regulatory science in the United Kingdom, including institut
ional practices, judgments of expertise, and established relationships of t
rust, result in a "nation centeredness" and divergence of regulatory cultur
es despite the putative development of a harmonized European framework. It
is argued that as a consequence, the claimed universalism of scientific cul
ture in this area is in tension with the local conditions of its practice a
nd enactment.