The Supreme Court (Edexcel A Level Politics): Revision Note

Exam code: 9PL0

Sarra Jenkins

Written by: Sarra Jenkins

Reviewed by: Steve Vorster

Updated on

What is the Supreme Court?

  • The UK Supreme Court (UKSC) is the highest court in the UK

  • It was created by the Constitutional Reform Act 2005 and began operating in 2009

    • It replaced the Appellate Committee of the House of Lords, removing the judiciary from Parliament and strengthening the separation between the branches of government

  • The creation of the Supreme Court was intended to:

    • increase judicial independence

    • clarify the role of the judiciary

    • modernise the UK constitution

Composition of the Supreme Court

  • The Supreme Court consists of 12 justices

  • Judges usually sit in panels of five, although seven or more may sit for cases of major constitutional importance

  • The Court has a President and Deputy President, who are senior justices

Appointment of Supreme Court Justices

  • The appointment process to the UK Supreme Court is set out in the Constitutional Reform Act 2005

The appointment process

Flowchart detailing UK Supreme Court Justices' appointment process under Constitutional Reform Act 2005, from vacancy to recommendation to the King.
UK Supreme Court Justices' appointment process
  • This process is designed to:

    • reduce political influence

    • preserve judicial independence

    • retain limited democratic oversight

The role of the Supreme Court

  • The Supreme Court has two main roles:

1. Final court of appeal

  • It is the highest court of appeal in the UK

  • Its decisions are binding on all lower courts

2. Constitutional role

  • This role is particularly important because the UK has an uncodified constitution

    • It rules on disputes between:

      • the executive and Parliament

      • devolved governments and Westminster

    • It interprets the law in cases involving:

      • constitutional principles

      • the limits of executive power

Operating principles of the Supreme Court

1. Judicial independence

  • Judicial independence refers to the ability of judges to make decisions:

    • free from political pressure

    • without fear of removal or punishment

  • Judicial independence is protected by:

    • secure tenure

    • protected salaries

    • an independent appointments process

2. Judicial neutrality

  • Judicial neutrality refers to judges:

    • not expressing political views

    • deciding cases based on law rather than opinion

  • Independence and neutrality are closely related but not the same thing

Summary table

Judicial independence

Judicial neutrality

  • Judges are free from political pressure

  • Judges do not express political views

  • Decisions made without fear of removal

  • Decisions based on law, not opinion

  • Protected by tenure and salary

  • Protected by professional norms

  • Ensures separation of powers

  • Ensures legitimacy of rulings

Challenges to judicial independence and neutrality

  • Despite constitutional protections, judicial independence and neutrality have been challenged.

    • Political criticism

      • Following Miller v Prime Minister (2019), Boris Johnson criticised the Supreme Court

      • Some politicians argued the Court had overstepped its role

    • Media criticism

      • In 2016, the Daily Mail described judges involved in Miller v Brexit Secretary as “Enemies of the People”

    • Accusations of judicial activism

      • Critics argue the Supreme Court has become too willing to intervene in political matters

      • These accusations are particularly linked to Brexit-related cases

Supreme Court influence on the Executive and Parliament

  • The main way in which the UK Supreme Court can influence Parliament or the executive is through the use of judicial review

Judicial review

  • Judicial review is the process by which the courts assess whether decisions or actions by the executive, including ministers, government departments, and public bodies, comply with the law

  • This includes reviewing whether they have:

    • acted within the limits of the law

    • followed correct procedure

    • complied with constitutional principles

  • Judicial review is binding when considering executive actions. If the government is found to have acted unlawfully, they must:

    • undo their actions, or

    • stop the action altogether

  • If the government wishes to overcome a ruling of unlawfulness, they may attempt to pass a new law that makes their action lawful

    • However, judicial review cannot strike down Acts of Parliament

Case Study

Miller v Prime Minister (2019)

A woman speaks into microphones outside a historic building, holding papers. People stand behind her, with an audience and media present.
  • In 2019, Boris Johnson prorogued Parliament

    • While prorogation is a common power of the Prime Minister, it was carried out unusually early

    • It appeared that Parliament was sent away to avoid difficult votes on Brexit

  • Gina Miller initiated a legal challenge, and the case was heard by the UK Supreme Court

Outcome

  • The Court ruled that:

    • the prorogation frustrated Parliament’s constitutional role of scrutiny

    • Boris Johnson had therefore acted unlawfully

  • Although Johnson said that he “profoundly disagreed” with the ruling, he did ultimately follow it

The doctrine of ultra vires

  • The doctrine of ultra vires means “beyond their power

    • If a minister or public body acts beyond the authority given to them by statute law, the courts can declare the action ultra vires and therefore unlawful

  • This doctrine underpins judicial review

    • The Court reviews executive action to ensure it has not exceeded the limits set by Parliament

  • Together, judicial review and the doctrine of ultra vires prevent the executive or Parliament exceeding their powers, placing a notable check on their actions

Key examples of the UK Supreme Court checking the executive and Parliament

Case

Significance

Miller v Brexit Secretary (2017)

  • The Court ruled that the government could not trigger Article 50 using only the royal prerogative

  • An Act of Parliament was required, reinforcing parliamentary sovereignty

Miller v Prime Minister (2019)

  • The Court unanimously held that prorogation was unlawful and void because it frustrated Parliament’s constitutional role of scrutiny

Begum v Home Secretary (2021)

  • The Court ruled in favour of the Home Secretary, preventing Shamima Begum from entering the UK, taking national security concerns into account

R v Home Secretary (2023)

  • The Court ruled that the Rwanda policy was unlawful due to risks of refoulement, meaning individuals could face persecution if sent to Rwanda

  • These cases show that the UK Supreme Court can and does intervene to:

    • prevent the executive exceeding its legal authority

    • protect constitutional principles

    • reinforce the role of Parliament

How powerful is the Supreme Court?

  • The power of the UK Supreme Court is significant but limited

  • While it plays an important role in checking the executive and upholding constitutional principles, it operates within clear constraints

Supreme Court is powerful

Supreme Court is limited

Judicial review is binding

  • The Court can declare executive actions unlawful, requiring them to be stopped or undone.

Cannot strike down Acts of Parliament

  • Parliamentary sovereignty means primary legislation cannot be overturned

Limits executive power

  • Prerogative powers can be restricted by the Court

    • E.g. Miller v Brexit Secretary (2017)

Parliament can respond with legislation

  • The government may pass new laws to overcome a ruling of unlawfulness

Intervenes in constitutional disputes

  • The Court has ruled on major political cases involving the executive and Parliament

    • E.g. Miller v Prime Minister (2019)

Reactive role

  • The Court can only act when cases are brought before it

Key role in an uncodified constitution

  • The Court interprets constitutional principles and limits

Relies on compliance

  • The Court has no enforcement powers and depends on the executive to implement rulings

Willing to check the executive

  • The Court has shown it can intervene where constitutional principles are threatened

Does not always oppose the executive

  • The Court has ruled in favour of the government in some cases

    • E.g. Begum v Home Secretary (2021)

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Sarra Jenkins

Author: Sarra Jenkins

Expertise: Content Writer

Sarra is a highly experienced A-Level Politics educator with over two decades of teaching and examining experience. She was part of the team that wrote the Edexcel 2017 Politics Specification and currently works as a Senior Examiner. A published author of 14 textbooks and revision guides, her expertise lies in UK and US politics, exam skills, and career guidance. She continues to teach, driven by her passion for this "evolving and dynamic subject".

Steve Vorster

Reviewer: Steve Vorster

Expertise: Economics & Business Subject Lead

Steve has taught A Level, GCSE, IGCSE Business and Economics - as well as IBDP Economics and Business Management. He is an IBDP Examiner and IGCSE textbook author. His students regularly achieve 90-100% in their final exams. Steve has been the Assistant Head of Sixth Form for a school in Devon, and Head of Economics at the world's largest International school in Singapore. He loves to create resources which speed up student learning and are easily accessible by all.