Treaty of Accession 1972 (United Kingdom to the European Communities)

E57970

accession treaty international agreement treaty

The Treaty of Accession 1972 was the international agreement that formalized the United Kingdom’s entry into the European Communities, marking its integration into the precursor of the European Union.

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All labels observed (9)

Label	Occurrences
Treaty of Accession 1972 (United Kingdom to the European Communities) canonical	3
1972 Treaty of Accession	1
Treaties of accession to the European Communities	1
Treaty concerning the accession of the Kingdom of Denmark, Ireland, the Kingdom of Norway and the United Kingdom of Great Britain and Northern Ireland to the European Communities	1
Treaty concerning the accession of the Kingdom of Denmark, Ireland, the Kingdom of Norway and the United Kingdom of Great Britain and Northern Ireland to the European Economic Community and to the European Atomic Energy Community	1
Treaty concerning the accession of the United Kingdom to the European Communities	1
Treaty of Accession 1972 (United Kingdom to European Communities)	1
UK Treaty of Accession 1972	1
United Kingdom accession to the European Communities	1

How this entity was disambiguated

This entity first appeared as the object of triple T465194 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: Treaty of Accession 1972 (United Kingdom to the European Communities)
Context triple: [Edward Heath, signed, Treaty of Accession 1972 (United Kingdom to the European Communities)]

A. Treaty of Rome
The Treaty of Rome is a 1957 international agreement that established the European Economic Community, laying a foundational step toward today’s European Union and its single market.
B. Trade and Cooperation Agreement between the European Union and the European Atomic Energy Community and the United Kingdom
The Trade and Cooperation Agreement between the European Union and the European Atomic Energy Community and the United Kingdom is the post-Brexit treaty that sets out the framework for their future relationship in areas such as trade, security, and energy cooperation.
C. Treaty of Paris (1951)
The Treaty of Paris (1951) was the international agreement that created the European Coal and Steel Community, laying an early foundation for European integration after World War II.
D. Withdrawal Agreement between the United Kingdom and the European Union
The Withdrawal Agreement between the United Kingdom and the European Union is the legally binding treaty that set out the terms of the UK's orderly departure from the EU, covering issues such as citizens' rights, the financial settlement, and transition arrangements.
E. Treaty of Lisbon
The Treaty of Lisbon is a 2007 agreement that reformed the European Union’s institutional structure and decision-making processes, enhancing its efficiency, democratic legitimacy, and coherence in external action.
F. None of above. chosen
G. Unsure - the case is ambiguous/there is not enough information to decide.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: Treaty of Accession 1972 (United Kingdom to the European Communities)
Target entity description: The Treaty of Accession 1972 was the international agreement that formalized the United Kingdom’s entry into the European Communities, marking its integration into the precursor of the European Union.

A. Treaty of Rome
The Treaty of Rome is a 1957 international agreement that established the European Economic Community, laying a foundational step toward today’s European Union and its single market.
B. Trade and Cooperation Agreement between the European Union and the European Atomic Energy Community and the United Kingdom
The Trade and Cooperation Agreement between the European Union and the European Atomic Energy Community and the United Kingdom is the post-Brexit treaty that sets out the framework for their future relationship in areas such as trade, security, and energy cooperation.
C. Treaty of Paris (1951)
The Treaty of Paris (1951) was the international agreement that created the European Coal and Steel Community, laying an early foundation for European integration after World War II.
D. Withdrawal Agreement between the United Kingdom and the European Union
The Withdrawal Agreement between the United Kingdom and the European Union is the legally binding treaty that set out the terms of the UK's orderly departure from the EU, covering issues such as citizens' rights, the financial settlement, and transition arrangements.
E. Treaty of Lisbon
The Treaty of Lisbon is a 2007 agreement that reformed the European Union’s institutional structure and decision-making processes, enhancing its efficiency, democratic legitimacy, and coherence in external action.
F. None of above. chosen

Statements (48)

Predicate	Object
instanceOf	accession treaty ⓘ international agreement ⓘ treaty ⓘ
alsoKnownAs	First Enlargement Treaty ⓘ
appliesTo	United Kingdom law via European Communities Act 1972 ⓘ
category	1972 in international relations ⓘ Treaties of accession to the European Communities ⓘ linked to: Treaty of Accession 1972 (United Kingdom to the European Communities)
countryAcceding	Denmark ⓘ Ireland ⓘ Norway ⓘ United Kingdom of Great Britain and Northern Ireland ⓘ linked to: United Kingdom
effectiveFrom	1973-01-01 ⓘ
endedFor	United Kingdom on 2020-01-31 following Brexit ⓘ
enteredIntoForceOn	1973-01-01 ⓘ
historicalContext	first enlargement of the European Communities ⓘ
implementedBy	European Communities Act 1972 (United Kingdom) ⓘ linked to: European Communities Act 1972
jurisdiction	European Communities ⓘ linked to: European Economic Community
language	Dutch ⓘ English ⓘ French ⓘ German ⓘ Italian ⓘ
legalBasisFor	United Kingdom membership of the European Communities ⓘ
officialName	Treaty concerning the accession of the Kingdom of Denmark, Ireland, the Kingdom of Norway and the United Kingdom of Great Britain and Northern Ireland to the European Economic Community and to the European Atomic Energy Community ⓘ linked to: Treaty of Accession 1972 (United Kingdom to the European Communities)
partOf	enlargement of the European Communities ⓘ
predecessorOf	United Kingdom’s membership in the European Union ⓘ
relatedTo	Euratom Treaty ⓘ Merger Treaty ⓘ Treaty of Rome ⓘ
resultedIn	accession of Denmark to the European Communities ⓘ accession of Ireland to the European Communities ⓘ accession of the United Kingdom to the European Communities ⓘ planned accession of Norway to the European Communities ⓘ
shortName	1972 Accession Treaty ⓘ UK Treaty of Accession 1972 ⓘ linked to: Treaty of Accession 1972 (United Kingdom to the European Communities)
signedAt	Brussels ⓘ linked to: Brussels, Belgium
signedBy	United Kingdom government ⓘ linked to: UK government government of Denmark ⓘ linked to: Government of Denmark government of Ireland ⓘ linked to: Government of Ireland government of Norway ⓘ linked to: Government of Norway governments of the six existing Member States of the European Communities ⓘ
signedOn	1972-01-22 ⓘ
statusOfNorwayAccession	not ratified following Norwegian referendum in 1972 ⓘ
subjectMatter	adaptations of the founding treaties of the European Communities ⓘ conditions of accession of the United Kingdom to the European Communities ⓘ
supersededBy	subsequent European Union treaties as regards institutional framework ⓘ
toOrganization	European Atomic Energy Community ⓘ European Economic Community ⓘ

How these facts were elicited