UK Supreme Court ruling on prorogation (Miller II, September 2019)
E814519
The UK Supreme Court ruling on prorogation (Miller II, September 2019) was a landmark judgment that unanimously found Prime Minister Boris Johnson’s advice to suspend Parliament unlawful, reinforcing parliamentary sovereignty and constitutional limits on executive power.
All labels observed (1)
| Label | Occurrences |
|---|---|
| UK Supreme Court ruling on prorogation (Miller II, September 2019) canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T9698421 — 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: UK Supreme Court ruling on prorogation (Miller II, September 2019) Context triple: [UK Parliament 2017–2019, keyEvent, UK Supreme Court ruling on prorogation (Miller II, September 2019)]
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A.
R (Miller) v Secretary of State for Exiting the European Union
R (Miller) v Secretary of State for Exiting the European Union is a landmark 2017 UK Supreme Court case that held the government must obtain parliamentary approval before triggering Article 50 to leave the European Union.
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B.
Act against Dissolution without Consent of Parliament
The Act against Dissolution without Consent of Parliament was a key constitutional law passed in 1641 that prevented King Charles I from dissolving the Long Parliament without its own agreement, significantly limiting royal prerogative.
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C.
Crown-in-Parliament
The Crown-in-Parliament is the constitutional doctrine in the United Kingdom that vests supreme legislative authority jointly in the monarch, the House of Commons, and the House of Lords.
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D.
House of Lords (Expulsion and Suspension) Act 2015
The House of Lords (Expulsion and Suspension) Act 2015 is a UK law that grants the House of Lords explicit powers to permanently expel or suspend its members for serious misconduct.
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E.
Erskine May: Parliamentary Practice
Erskine May: Parliamentary Practice is the authoritative reference work on the law, procedures, and conventions of the UK Parliament, particularly the House of Commons.
- 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: UK Supreme Court ruling on prorogation (Miller II, September 2019) Target entity description: The UK Supreme Court ruling on prorogation (Miller II, September 2019) was a landmark judgment that unanimously found Prime Minister Boris Johnson’s advice to suspend Parliament unlawful, reinforcing parliamentary sovereignty and constitutional limits on executive power.
-
A.
R (Miller) v Secretary of State for Exiting the European Union
R (Miller) v Secretary of State for Exiting the European Union is a landmark 2017 UK Supreme Court case that held the government must obtain parliamentary approval before triggering Article 50 to leave the European Union.
-
B.
Act against Dissolution without Consent of Parliament
The Act against Dissolution without Consent of Parliament was a key constitutional law passed in 1641 that prevented King Charles I from dissolving the Long Parliament without its own agreement, significantly limiting royal prerogative.
-
C.
Crown-in-Parliament
The Crown-in-Parliament is the constitutional doctrine in the United Kingdom that vests supreme legislative authority jointly in the monarch, the House of Commons, and the House of Lords.
-
D.
House of Lords (Expulsion and Suspension) Act 2015
The House of Lords (Expulsion and Suspension) Act 2015 is a UK law that grants the House of Lords explicit powers to permanently expel or suspend its members for serious misconduct.
-
E.
Erskine May: Parliamentary Practice
Erskine May: Parliamentary Practice is the authoritative reference work on the law, procedures, and conventions of the UK Parliament, particularly the House of Commons.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
United Kingdom constitutional law case
ⓘ
court judgment ⓘ |
| alsoKnownAs |
Miller (No 2)
ⓘ
Miller II ⓘ Miller v The Prime Minister (2019 prorogation case) ⓘ
linked to:
Miller v The Prime Minister
R (Miller) v The Prime Minister [2019] UKSC 41 ⓘ
linked to:
Miller v The Prime Minister
|
| citation | [2019] UKSC 41 ⓘ |
| clarified |
constitutional limits on the royal prerogative
ⓘ
that prerogative powers are subject to legal limits ⓘ |
| concerns |
advice of the Prime Minister to the monarch
ⓘ
suspension of the UK Parliament in 2019 ⓘ |
| context |
2019 attempt to prorogue Parliament for five weeks before Brexit deadline
ⓘ
Brexit ⓘ |
| country | United Kingdom ⓘ |
| court | Supreme Court of the United Kingdom ⓘ |
| dateDecided | 2019-09-24 ⓘ |
| decisionType | unanimous judgment ⓘ |
| effect |
Parliament resumed sitting shortly after the judgment
ⓘ
Parliament was deemed not to have been prorogued ⓘ
linked to:
Prorogation of Parliament (September 2019)
|
| found |
Prime Minister’s advice to prorogue Parliament was unlawful
ⓘ
the prorogation of Parliament was null and of no effect ⓘ |
| fullCaseName |
R (on the application of Miller) v The Prime Minister and Cherry v Advocate General for Scotland
ⓘ
linked to:
Miller v The Prime Minister
|
| holding |
courts can review the lawfulness of prorogation
ⓘ
prorogation that frustrates or prevents Parliament from carrying out its constitutional functions without reasonable justification is unlawful ⓘ |
| joinedCase | Cherry v Advocate General for Scotland ⓘ |
| jurisdiction | United Kingdom ⓘ |
| leadClaimant | Gina Miller ⓘ |
| legalArea |
constitutional law
ⓘ
public law ⓘ |
| monarchInvolved | Elizabeth II ⓘ |
| numberOfJustices | 11 ⓘ |
| overturned | earlier High Court ruling in England and Wales that the issue was non-justiciable ⓘ |
| presidingJudge |
Lady Hale
ⓘ
linked to:
Baroness Hale of Richmond
Lord Reed ⓘ |
| primeMinisterInvolved | Boris Johnson ⓘ |
| reinforcedPrinciple |
parliamentary accountability of the executive
ⓘ
parliamentary sovereignty ⓘ rule of law ⓘ |
| significance |
landmark case on the reviewability of prerogative powers
ⓘ
major precedent on the relationship between Parliament and the executive in the UK constitution ⓘ |
| subjectMatter |
constitutional limits on executive power
ⓘ
justiciability of prerogative powers ⓘ limits of prerogative powers ⓘ parliamentary sovereignty ⓘ prorogation of Parliament ⓘ |
| upheld | Inner House of the Court of Session decision that the prorogation was unlawful ⓘ |
| yearDecided | 2019 ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: UK Supreme Court ruling on prorogation (Miller II, September 2019) Description of subject: The UK Supreme Court ruling on prorogation (Miller II, September 2019) was a landmark judgment that unanimously found Prime Minister Boris Johnson’s advice to suspend Parliament unlawful, reinforcing parliamentary sovereignty and constitutional limits on executive power.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.
UK Parliament 2017–2019
→
keyEvent
→
UK Supreme Court ruling on prorogation (Miller II, September 2019)
ⓘ