Parliament's Relationship with the Other Branches of Government

Parliament's relationship with the other branches of government is a key aspect of the UK political system. Parliament interacts primarily with the executive and the judiciary, creating a system where power is shared, scrutinised and balanced. Understanding these relationships is essential for A-Level Politics students because they illustrate how government operates in practice and help explain debates about accountability, parliamentary sovereignty and executive power.

This topic can be found in the following A-Level Politics specifications:

• AQA A-Level Politics | Component 1: Government and Politics of the UK | Topic 2: The Structure and Role of Parliament

• Pearson Edexcel A-Level Politics | Component 2: UK Government and Non-Core Political Ideas | Topic 2: UK Parliament | Topic 4: Relations Between the Branches

Definitions

• Executive: The branch of government responsible for implementing laws and running the country, including the Prime Minister, Cabinet and ministers.
• Judiciary: The branch of government responsible for interpreting and applying the law through the courts.
• Scrutiny: The process of examining and holding government actions, decisions and policies to account.
• Parliamentary Privilege: Legal protection allowing MPs and peers to speak freely during parliamentary proceedings without fear of legal action.
• Parliamentary Sovereignty: The principle that Parliament is the supreme legal authority and can make or repeal any law.

Key Features

Parliament and the Executive

Parliament's main relationship is with the executive because the government is drawn from Parliament and remains accountable to it. Parliament scrutinises ministers through Prime Minister's Questions, ministerial questions, debates and Select Committees. Prime Minister's Questions provide a weekly opportunity for MPs to question the Prime Minister on government policy and performance. Ministerial questions allow MPs to challenge departmental ministers on their decisions and actions. Select Committees investigate government departments, gather evidence and publish reports that can expose policy failures. For example, in 2023 the Commons Privileges Committee concluded that former Prime Minister Boris Johnson had repeatedly misled Parliament regarding gatherings in Downing Street during the COVID-19 pandemic. Parliamentary privilege plays an important role in this relationship because it allows MPs and peers to raise sensitive issues and scrutinise ministers without fear of legal consequences.

Executive Influence Over Parliament

Although Parliament scrutinises the executive, governments often exercise considerable influence over Parliament. Most governments possess a majority in the House of Commons, enabling them to pass legislation and defeat opposition amendments. Party discipline, enforced by the Whips, encourages MPs to support government policies. Governments also control much of the parliamentary timetable, allowing them to prioritise their legislative agenda. For example, after the 2024 general election, the Labour government used its large Commons majority to advance key manifesto commitments through Parliament. This relationship means that Parliament often faces challenges when attempting to hold a strong government fully accountable.

Parliament and the Judiciary

Parliament and the judiciary perform different but interconnected functions. Parliament creates laws, while judges interpret and apply those laws in specific cases. The courts can influence Parliament through their interpretation of legislation and human rights law. Under the Human Rights Act 1998, courts may issue declarations of incompatibility when legislation appears to conflict with rights protected by the European Convention on Human Rights. For example, legal challenges to the Rwanda asylum policy generated significant parliamentary debate and eventually contributed to new legislation being introduced by Parliament. However, Parliament remains sovereign. Courts cannot strike down Acts of Parliament, and Parliament retains the final authority to make, amend or repeal laws. The relationship therefore combines judicial influence with parliamentary supremacy.

Evaluation

Advantages

• Accountability: Parliament provides important mechanisms for scrutinising ministers and holding the executive to account.
• Checks and balances: The judiciary and Parliament can both scrutinise government actions, reducing the risk of excessive executive power.
• Democratic legitimacy: Parliament remains the central democratic institution because elected MPs have the final say on legislation.

Disadvantages

• Executive dominance: Governments with large Commons majorities can often control Parliament and limit effective scrutiny.
• Limited judicial power: Courts can influence debate but cannot overturn Acts of Parliament.
• Party discipline: The Whips often encourage MPs to support government policies, reducing Parliament's independence.

Debate and Arguments

A major political debate concerns whether Parliament effectively holds the executive to account. Supporters argue that PMQs, debates, opposition parties and Select Committees provide strong mechanisms of scrutiny. Critics argue that party discipline and large government majorities frequently weaken Parliament's ability to challenge ministers.

There is also debate about the balance of power between Parliament and the executive. Some academics argue that the UK system has become increasingly dominated by the executive because governments control legislation, parliamentary time and party loyalty. Others contend that backbench rebellions, committee investigations and media scrutiny mean Parliament continues to exert significant influence.

A constitutional debate surrounds the role of the judiciary. Some argue that judicial decisions and human rights rulings provide an important check on government power. Others argue that unelected judges should not influence political decision-making and that Parliament should remain fully sovereign.

Finally, there is debate about whether the balance of power has changed over time. Some believe Parliament has become stronger through the growth of Select Committees and increased public scrutiny. Others argue that modern governments remain dominant because of party discipline and the concentration of executive power.

Summary

Students should remember:

• Parliament interacts primarily with the executive and the judiciary.
• Parliament scrutinises the executive through questions, debates and Select Committees.
• Governments can influence Parliament through party discipline, Commons majorities and control of parliamentary time.
• The judiciary interprets legislation and can influence parliamentary debate through legal rulings.
• Parliament remains sovereign and retains the final authority to make and amend laws.