This article explores a style-phase model of staged organizational response
s to external pressure for change against two competing hypotheses, focusin
g on demands for greater openness and transparency. A study of six risk reg
ulation regimes in the United Kingdom revealed that only half were exposed
to substantial pressures of this type. Responses of organizations in the "h
igh-pressure" regimes were varied but the overall pattern was consistent wi
th a mixture of an autopoietic and staged-response hypothesis stressing bla
me prevention, and the article accordingly presents a hybrid "Catherine Whe
el" model of the observed pattern. The article concludes by discussing the
implications for policy outcomes.