(not including party fractions and specifically business and union organisations)
| Type of organisation | Pro-euro | Anti-euro |
| Research organisation (single issue think tanks; focusing principally upon the policy arena) |
Action Centre for Europe (Lord Geoffrey Howe) | New Europe Global Britain European Research Group European Foundation |
| Campaign organisation (coalition/alliance) | Britain in Europe | No Campaign Anti-Maastricht Alliance (AMA) Congress for Democracy The European Alliance of EU-Critical Movements (TEAM) Campaign Alliance for Referendums in Parishes |
| Campaign organisations (single issue groups) | Citizens for Europe European Movement Young European Movement | Democracy Movement Campaign for an Independent Britain (CIB)
British Democracy Campaign Campaign Against Euro-Federalism Freedom Association
New Alliance Youth for a Free Europe The Bruges Group Anti-Common Market League |
Source: Gray (2003)