Scholars have disagreed over the origins of the single market programm
e and, in particular, over the role played by business groups in influ
encing the 1992 project. This article provides a systematic examinatio
n of the major policy actors behind the 1992 project, notably the Euro
pean Round Table of Industrialists (ERT). It is argued that, contrary
to intergovernmentalist interpretations, the ERT was largely responsib
le for setting the agenda for the single market programme. The article
concludes that traditional theories of European integration cannot ca
pture the political role of non-state actors in EU regulatory policy-m
aking, and suggests an alternative approach is necessary.