Welcome to The Prime Minister and Cabinet
Welcome to your study guide for Unit AS 2: The British Political Process (Paper code: SGP21). In this chapter, we explore the engine room of British politics: The Prime Minister and the Cabinet.
Don't worry if political structures feel a bit confusing at first. We will break down who holds power, how decisions are actually made, and why even the most dominant Prime Ministers cannot simply do whatever they like. Master these concepts, and you will be ready to tackle the short-answer and extended essay questions in your exam with confidence!
1. Key Concepts: The Executive and Models of Power
What is the Executive?
In politics, the Executive is the branch of government responsible for developing policy, implementing laws, and managing the day-to-day administration of the country.
The Core Executive
Power in the UK does not sit with just one person. Instead, it is shared across a network known as the Core Executive. This network includes:
• The Prime Minister (the head of government).
• The Cabinet (senior government ministers).
• Cabinet Committees (specialist ministerial groups).
• The Prime Minister's Office (advisers and staff at 10 Downing Street).
• The Cabinet Office (civil servants who coordinate policy).
• Special Advisers (SPADs) and senior civil servants.
Everyday Analogy: Think of the Core Executive like the leadership team of a major football club. The Prime Minister is the manager, the Cabinet ministers are the senior coaches, and the civil servants and advisers are the tactical analysts and support staff making sure the game plan runs smoothly.
Two Competing Models of Executive Power
Political scientists debate how power is distributed inside the UK executive:
1. Cabinet Government:
This is the traditional constitutional model. It suggests that power is shared collectively by the Cabinet. The Prime Minister acts simply as primus inter pares (a Latin phrase meaning "first among equals"). In this view, major decisions must be debated, agreed upon, and backed by the entire Cabinet.
2. Prime Ministerial / Presidential Government:
This theory argues that the traditional Cabinet model is outdated. Instead, power has concentrated heavily in the hands of the Prime Minister. Supporters of this idea argue that the PM acts like an executive President: dominating the media spotlight, relying on personal advisers rather than Cabinet colleagues, and driving policy from the centre.
Section 1 Key Takeaway:
The Core Executive is a complex network, not a one-man show. While some argue the UK now has a "presidential" system led by a dominant PM, the traditional model of "Cabinet government" relies on collective decision-making.
2. Composition and Role of the Cabinet
Who Sits in the Cabinet?
The Cabinet typically consists of 20 to 23 senior government ministers appointed directly by the Prime Minister. These include the heads of major government departments, such as:
• The Chancellor of the Exchequer (responsible for the economy and Treasury).
• The Foreign Secretary (responsible for international relations).
• The Home Secretary (responsible for policing, security, and immigration).
What Does the Cabinet Actually Do?
Although full Cabinet meetings are shorter and less frequent than they used to be, the Cabinet still performs four vital constitutional functions:
• Legitimising policy: Transforming broad government ideas into official, unified state policy.
• Resolving disputes: Settling conflicts between different departments when ministers cannot agree.
• Managing parliamentary business: Organising the government's legislative timetable to get bills passed through the House of Commons and House of Lords.
• Crisis management: Coordinating the national response to emergencies, wars, and major economic shocks.
The Power of Cabinet Committees
Because full Cabinet meetings are large, much of the real detailed work happens in Cabinet Committees and Sub-Committees. These are smaller groups of ministers appointed by the PM to focus on specific issues (such as National Security or Domestic Affairs).
Crucial Point: Decisions made within Cabinet Committees carry the full authority of the entire Cabinet. This allows issues to be "pre-cooked" and agreed by a small circle of key ministers before reaching the wider Cabinet table.
Section 2 Key Takeaway:
The Cabinet is the formal collective decision-making body of 20–23 senior ministers. However, day-to-day decisions are often hammered out beforehand inside specialized Cabinet Committees.
3. Powers and Roles of the Prime Minister
The Prime Minister holds a unique combination of historical, political, and institutional powers. Let's look at the main sources of PM authority:
• Royal Prerogative Powers: Historically held by the monarch, these powers are now exercised by the Prime Minister. They include deploying the armed forces, declaring military action, signing international treaties, and granting honours.
• Patronage Powers: The PM has the power to hire, reshuffle, and fire Cabinet and junior ministers. The PM also recommends life peerages (seats in the House of Lords) and appoints chairs of public bodies. This power keeps ambitious MPs loyal.
• Agenda Setting: The PM decides when the Cabinet meets, what is placed on the agenda, which papers are circulated, and who chairs which Cabinet Committees.
• Head of the Civil Service and Policy Leadership: The PM leads the machinery of government and sets the overall ideological and strategic direction for the nation.
• Chief Diplomat and Party Leader: The PM represents the UK on the world stage (e.g., at G7 and NATO summits) and commands authority at home as the leader of the majority party in the House of Commons.
Memory Aid: The 5 'P's of Prime Ministerial Power
• Prerogative (deploying forces, making treaties)
• Patronage (hiring, firing, promoting ministers)
• Programme / Agenda (controlling the Cabinet agenda)
• Policy Leadership (setting the national direction)
• Party Leadership & Public Profile (leading the Commons majority and representing the UK abroad)
Section 3 Key Takeaway:
The PM wields significant authority through Royal Prerogative powers, patronage, and agenda-setting, all backed by their position as leader of the majority party in Parliament.
4. Constitutional Conventions of Ministerial Responsibility
Ministers are held to high standards through two fundamental constitutional conventions. Understanding the difference between them is vital for AS exam success!
A. Collective Ministerial Responsibility (CMR)
CMR applies to the government as a collective unit. It rests on three core pillars:
1. Cabinet Solidarity: All ministers must publicly support government policy, even if they secretly argued against it in private Cabinet discussions. If a minister cannot defend a policy publicly, they are expected to resign.
Real Examples:
• Robin Cook (2003): Resigned from Tony Blair's Cabinet because he could not support military action in Iraq.
• Boris Johnson & David Davis (2018): Both resigned from Theresa May's Cabinet because they opposed her "Chequers plan" for Brexit.
2. Cabinet Confidentiality: Discussions inside Cabinet and its committees must remain completely secret so ministers can debate honestly without fear of public leaks.
3. The Confidence Principle: The government can only govern if it holds the confidence of the House of Commons. If a government loses a formal Vote of No Confidence, the entire government must resign or call a general election (e.g., James Callaghan in 1979).
Exceptions: When is CMR Suspended?
A Prime Minister can temporarily suspend CMR during specific national debates to prevent their party from splitting apart:
• Referendums: Suspended during the 1975 EEC referendum, the 2011 Alternative Vote (AV) referendum, and the 2016 EU referendum to allow ministers to campaign on opposing sides.
• Coalition Government (2010–2015): The Conservative–Liberal Democrat coalition agreement formally set aside CMR on specific contested policies (such as higher education funding and nuclear power).
B. Individual Ministerial Responsibility (IMR)
IMR means that each minister is individually accountable to Parliament for three things:
• Their personal conduct and ethical behaviour.
• Major departmental errors made under their watch.
• The performance and actions of civil servants working in their department.
The standards expected of ministers are set out in the official Ministerial Code. Importantly, the Prime Minister is the ultimate judge of whether a minister has breached this code and decides what punishment (or dismissal) should follow.
Examiner Trap Alert: Do Not Confuse CMR and IMR!
• CMR = Collective Teamwork: Standing united behind government decisions, keeping discussions secret, and surviving confidence votes together.
• IMR = Individual Behaviour: An individual minister taking responsibility for personal scandals or failures within their specific department.
Section 4 Key Takeaway:
CMR ensures the executive presents a united front to Parliament and the public, while IMR holds individual ministers accountable for their conduct and departments.
5. What Limits Prime Ministerial Dominance?
Is the Prime Minister an all-powerful elected dictator? No! A PM's power is always conditional, fluctuating, and constrained by institutional checks.
1. Size and Reliability of Parliamentary Majority
• Large, united majorities allow PMs to pass their legislation easily (e.g., Tony Blair in 1997, Boris Johnson in 2019).
• Small or non-existent majorities leave PMs vulnerable to backbench rebellions and parliamentary defeats (e.g., John Major from 1992–1997, Theresa May from 2017–2019, or the Cameron–Clegg Coalition from 2010–2015).
2. Cabinet Colleagues ("Big Beasts")
A PM cannot simply ignore powerful Cabinet rivals who command large followings among MPs and party members. Examples include Gordon Brown under Tony Blair and Michael Heseltine under Margaret Thatcher. Sacking or ignoring a "Big Beast" can trigger serious backbench revolts.
3. Internal Party Dissent and the 1922 Committee
In the UK, the PM is not directly elected as head of government by the public; they hold power because they lead the majority party in the Commons. If their own MPs lose faith, the party can remove them.
The Conservative backbench 1922 Committee and internal leadership challenges played a decisive role in the departures of Margaret Thatcher, Theresa May, Boris Johnson, and Liz Truss.
4. Judicial Review and the Supreme Court
The courts can rule that executive actions are unlawful (ultra vires):
• Miller I (2017): The Supreme Court ruled that the government could not trigger Article 50 to leave the EU using prerogative powers without an Act of Parliament.
• Miller II / Cherry (2019): The Supreme Court ruled that Boris Johnson's five-week prorogation (suspension) of Parliament was unlawful.
5. External Events, Media Scrutiny, and Economic Crises
Unforeseen economic shocks, geopolitical events, and relentless media scrutiny can rapidly drain a Prime Minister's political capital, regardless of their formal powers.
Section 5 Key Takeaway:
Prime ministerial power is never fixed. It rises and falls based on majority size, party unity, Cabinet rivals, judicial rulings, and external events.
6. Top Exam Tips & Common Pitfalls to Avoid
To score top marks in your AS 2 exam, keep these golden rules in mind:
• Avoid the "Static Presidential" Trap: Never write an essay arguing that the Prime Minister is "always presidential" or "all-powerful". Always argue that PM power is elastic and conditional—strong under certain conditions (large majority, high popularity) and weak under others (small majority, party splits).
• Include the Core Executive: High-scoring answers do not just describe a boxing match between the PM and the Cabinet. They discuss the wider machinery: Cabinet Committees, SPADs, the Cabinet Office, and civil servants.
• Use Modern Examples: Don't rely exclusively on Margaret Thatcher or Tony Blair. Back up your points with modern examples from administrations such as David Cameron, Theresa May, Boris Johnson, Liz Truss, Rishi Sunak, and Keir Starmer.
• Remember the Foundation: Always remind the examiner that a Prime Minister's power fundamentally depends on maintaining the confidence of both the House of Commons and their own political party.
Quick Review: Check Your Knowledge
Can you answer these quick questions from memory?
1. What does the term primus inter pares mean, and which constitutional model does it describe?
2. What are the three core principles of Collective Ministerial Responsibility (CMR)?
3. In which years was CMR formally suspended for national referendums?
4. Name two Supreme Court cases that successfully placed legal limits on executive actions.
5. Why did Robin Cook resign from the Cabinet in 2003, and why did Boris Johnson resign in 2018?