United Kingdom's accession to the European Communities

United Kingdom's accession to the European Communities
Country	United Kingdom
Accession date	1973-01-01
Communities	European Communities
Treaty	Treaty of Accession 1972
Referendums	1975 United Kingdom European Communities membership referendum
Prime minister	Edward Heath
Predecessors	Norway (applied), Denmark, Ireland

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United Kingdom's accession to the European Communities

The accession of the United Kingdom to the European Communities was a defining political, diplomatic, and legal process culminating on 1 January 1973 with the United Kingdom, Denmark, and Republic of Ireland joining the European Economic Community and associated bodies. The process involved negotiations led by Prime Minister Edward Heath, engagement with institutions such as the European Commission and the European Parliament, and domestic ratification through parliamentary votes and a subsequent national 1975 United Kingdom European Communities membership referendum. This accession reshaped relations with Commonwealth partners like Australia and Canada and influenced subsequent treaties including the Single European Act and the Treaty of Maastricht.

Background and pre-accession relations

In the post-World War II order the United Kingdom pursued ties with European institutions including the Council of Europe and the European Coal and Steel Community, while balancing relations with the United States, Commonwealth of Nations, and NATO ally France. Earlier proposals such as the European Defence Community and the Schuman Declaration framed debates that involved figures like Winston Churchill, Charles de Gaulle, and Konrad Adenauer. Initial attempts by UK governments led by Harold Macmillan and Alec Douglas-Home culminated in the first accession application in 1961 and a second in 1967 after a French veto by Charles de Gaulle in 1963 and 1967. Pre-accession economic ties with the Benelux countries, West Germany, Italy, and trade disputes involving the Common Agricultural Policy and the General Agreement on Tariffs and Trade influenced London’s strategy.

Formal negotiations launched under Prime Minister Edward Heath followed détente with France after Pompidou succeeded de Gaulle, involving heads of government from Belgium, Netherlands, Luxembourg, Italy, and West Germany. Delegations included ministers such as George Brown and negotiators from the Foreign Office and the Board of Trade, while the European Commission and President Jean Rey oversaw technical talks. Core issues included the Common Agricultural Policy, the Common External Tariff, budget contributions, and the status of territories of the New Hebrides and links with the Channel Islands and Isle of Man. The resulting Treaty of Accession 1972 set timetable provisions, transition clauses, and opt-outs later echoed in documents like the Luxembourg Compromise.

Ratification required parliamentary approval from the House of Commons and the House of Lords, intense campaigning by factions including the pro-accession Conservative Party under Edward Heath and cross-party groups like the Pro-European Movement. Opposition came from figures in the Labour Party such as Harold Wilson and trade union leaders including Hugh Scanlon and Jack Jones, as well as activists from the National Front and intellectuals associated with The Sunday Times and The Times. The 1974 general elections brought a minority Labour government that renegotiated terms leading to the 1975 United Kingdom European Communities membership referendum, overseen by the Electoral Commission precursor and campaigned on by committees like Britain in Europe and National Referendum Campaign. The referendum confirmed membership, with prominent endorsers including Roy Jenkins, Michael Foot on the Remain side controversy with Enoch Powell on the Leave side.

Accession integrated UK law with the acquis of the European Communities, affecting statutes such as those administered by the Customs and Excise and regulatory regimes linked to the Common Fisheries Policy and the Common Agricultural Policy. Financial arrangements involved budget contributions negotiated with the European Investment Bank and implications for the Bank of England and sterling. Legal effects included supremacy principles later articulated by the European Court of Justice in cases analogous to Costa v ENEL and Van Gend en Loos, with UK courts including the House of Lords adapting doctrines in decisions cited alongside lawyers from chambers in Gray's Inn and Lincoln's Inn. Trade flows with partners such as France, West Germany, Italy, Spain (future member), and Belgium expanded under preferential access, intersecting with UK ties to United States tariffs and GATT obligations.

Implementation involved schedules for tariff reductions, quotas, and state aid adjustments coordinated by the European Commission Directorate-General teams and UK ministries including the Ministry of Agriculture, Fisheries and Food and the Department of Trade and Industry. Transitional arrangements covered fisheries access negotiated with coastal communities in Cornwall and Scotland, and exemptions for overseas territories like Bermuda and Gibraltar pending separate arrangements. UK legislation such as the European Communities Act 1972 provided domestic effect to Community law, while civil service departments established liaison units with the European Council and the Permanent Representatives Committee (COREPER). Implementation challenges echoed in later disputes resolved through arbitration and the European Court of Justice.

Accession set the course for subsequent negotiations culminating in the Single European Act, the Treaty of Maastricht, and the Treaty of Lisbon, shaping debates about sovereignty voiced by politicians including Margaret Thatcher and Tony Blair. Long-term legacies included realignment of trade patterns with the European Union's predecessor, shifts in party politics that contributed to the 2016 United Kingdom European Union membership referendum and the eventual Brexit process under David Cameron and Theresa May. Institutional legacies persist in administrative practices, treaty jurisprudence involving the European Court of Human Rights interplay, and the constitutional role of statutes like the European Communities Act 1972 until its repeal under the European Union (Withdrawal) Act 2018.