Prime Minister, Cabinet & Executive Power
Prime Minister, Cabinet & Executive Power
The Executive Branch
The UK executive consists of the Prime Minister, the Cabinet (approximately 20-25 senior ministers), junior ministers, and the civil service. Unlike the US, the UK has a fused executive and legislature — the PM and ministers sit in Parliament.
Powers of the Prime Minister
The PM's powers derive from Royal Prerogative, convention, and party leadership:
| Power | Description |
|---|---|
| Patronage | Appoints and dismisses ministers, peers, senior civil servants, and public appointments |
| Chair of Cabinet | Sets the agenda, controls discussion, and summarises conclusions (no formal votes) |
| Policy direction | Sets the overall direction of government policy |
| Government organisation | Can create, merge, or abolish government departments |
| Foreign affairs & defence | Represents the UK internationally; deploys armed forces (convention now requires a Commons vote, established 2003 Iraq) |
| Party leadership | Commands the loyalty of the governing party in Parliament |
| Media & communication | Principal spokesperson for the government |
Models of PM Power
Prime Ministerial Government
Richard Crossman (1963) and Michael Foley (2000) argued that the PM has become so dominant that Cabinet government has been replaced by prime ministerial government or a British presidency.
Evidence for PM dominance:
- Tony Blair (1997-2007): "sofa government" — key decisions made in bilateral meetings, not full Cabinet; Cabinet meetings shortened to 30-45 minutes; took the UK to war in Iraq 2003 with a small inner circle
- Margaret Thatcher (1979-1990): dominated Cabinet, famously declaring "I don't mind how much my ministers talk, as long as they do what I say"
- Boris Johnson (2019-2022): centralised decision-making in No. 10, marginalised Cabinet ministers, prorogued Parliament (ruled unlawful)
Cabinet Government
Martin Smith (1999) argued for a core executive model: power is not concentrated in one person but distributed across a network of actors who depend on each other for resources.
Evidence for Cabinet power:
- Thatcher was removed by her own Cabinet in 1990 (ministers told her she could not win the leadership ballot)
- Boris Johnson resigned in 2022 after mass Cabinet resignations made governing impossible
- Coalition government (2010-2015): Cameron could not dominate because the Lib Dems held a veto in Cabinet
- Ministers with strong departmental bases and political support can resist PM pressure
Constraints on PM Power
- Size of parliamentary majority: a small or no majority limits the PM (May 2017-2019 had no majority and was defeated 33 times)
- Party unity: backbench rebellions can destroy a PM's authority (Johnson faced a confidence vote in June 2022)
- Cabinet strength: powerful ministers (Chancellor, Home Secretary) can constrain or challenge
- Media and public opinion: sustained negative coverage erodes authority
- Events: uncontrollable crises (Covid-19, economic shocks) can overwhelm any PM
- The civil service: permanent officials may resist or slow-walk radical change
- Parliament: select committees, Opposition Days, votes of no confidence
The Cabinet
Functions:
- Formal policy approval: major decisions are ratified by Cabinet
- Coordination: ensures departments work together coherently
- Dispute resolution: settles disagreements between ministers
- Political direction: discusses political strategy and communication
- Collective responsibility: once a decision is made, all ministers must support it publicly or resign
Cabinet Committees:
- Most detailed work happens in Cabinet committees and sub-committees (e.g. the National Security Council, Economic Affairs Committee)
- The PM decides which committees exist and who chairs them
Collective Ministerial Responsibility (CMR)
- All ministers must publicly support Cabinet decisions, even if they disagreed privately
- Ministers who cannot support a policy must resign (e.g. Robin Cook resigned over Iraq in 2003; Rishi Sunak and Sajid Javid resigned over Johnson's handling of the Chris Pincher affair in 2022)
- CMR can be suspended: Harold Wilson suspended it for the 1975 EEC referendum; Cameron suspended it for the 2016 EU referendum
- Maintains the appearance of government unity
Individual Ministerial Responsibility (IMR)
- Ministers are personally accountable for their department's conduct and their own behaviour
- In theory, ministers should resign for serious departmental failures or personal misconduct
- In practice, resignations for departmental failure are rare (the convention has weakened)
- Examples of resignation: Amber Rudd (2018, misleading Parliament over Windrush deportation targets); Matt Hancock (2021, breaking Covid rules)
- Examples of NOT resigning: Priti Patel survived a bullying inquiry (2020); Boris Johnson initially survived Partygate
The Civil Service
- Permanent, politically neutral, employed on merit (since the Northcote-Trevelyan reforms 1854)
- Serves the government of the day regardless of party
- Strengths: expertise, continuity, impartiality
- Criticisms: too cautious ("Yes, Minister" culture), resistant to radical reform, too powerful relative to elected ministers
- Dominic Cummings (Johnson's chief adviser 2019-2020) openly attacked the civil service as obstructive, seeking to recruit "misfits and weirdos"
Key Thinker: Lord Hailsham (1907-2001)
In 1976, Hailsham described the UK system as an "elective dictatorship" — a government with a large Commons majority can effectively do whatever it wants for five years with minimal checks. This critique remains highly relevant: Labour's 2024 landslide (412 seats) gives it enormous power to legislate without effective parliamentary opposition.
Evaluation: Is the PM a President?
Yes (presidentialisation thesis):
- Spatial leadership: PM operates above and apart from Cabinet (Foley)
- Media focus on the PM as national leader
- Large No. 10 staff (special advisers, policy unit) rival a presidential office
- Direct communication with the public via social media
No:
- PM can be removed by their party at any time (unlike a president with a fixed term)
- PM depends on parliamentary confidence — not directly elected by the people
- Cabinet and party remain essential power bases
- The PM has no separate mandate from the legislature
Exam Tips
- Use specific PM examples (Blair, Thatcher, Johnson, May, Starmer) to illustrate arguments
- Know the Crossman/Foley presidentialisation thesis and the core executive model
- Be able to evaluate CMR and IMR with named resignation examples
- Lord Hailsham's "elective dictatorship" is essential for evaluating executive power
- Consider whether the PM's power depends more on personality or circumstances