Introduction
Parliament is the main law-making body in the UK. It also plays a key role in checking the government and representing the public. The UK Parliament is made up of the House of Commons, the House of Lords, and the Monarch. This essay will explain the main roles of Parliament, how it performs them, and some limits to its powers.

Legislation
One of Parliament’s main jobs is to make laws. Most laws are made through bills, which go through several stages in both Houses before receiving Royal Assent and becoming law. For example, the Human Rights Act 1998 and the Equality Act 2010 were passed by Parliament. Parliament can also amend or repeal old laws to respond to changes in society. For example, the Marriage (Same Sex Couples) Act 2013 updated marriage law to allow same-sex couples to marry.

Scrutiny of the Government
Parliament checks that the government is acting properly and following the law. MPs and Lords can question ministers, debate policies, and review government actions. Committees, such as the Public Accounts Committee, examine how public money is spent and report on government mistakes. Scrutiny helps prevent abuse of power and ensures transparency.

Representation
Parliament represents the public’s views and interests. MPs in the House of Commons are elected by voters, while the Lords represent expertise, experience, and tradition. MPs can raise issues affecting their constituents, such as local concerns about hospitals, schools, or transport. This ensures government decisions reflect the needs of society.

Debate
Parliament provides a forum for debate on important issues. MPs and Lords discuss bills, policies, and national concerns, allowing different viewpoints to be heard. For example, debates on Brexit in 2016–2019 showed Parliament examining the consequences of leaving the EU. Debates influence decisions and hold the government accountable.

Legitimacy and Accountability
Parliament gives legitimacy to government actions because laws passed by elected representatives are democratically approved. It also holds ministers accountable through question time, debates, and committees. If the government loses the support of Parliament, it may be forced to resign, showing the power of accountability.

Limitations and Challenges
Parliament is not all-powerful. The government often controls the legislative agenda, especially if it has a majority in the Commons, which can limit debate and scrutiny. The House of Lords cannot block bills permanently; it can only delay them. Additionally, MPs sometimes follow party instructions rather than representing their constituents.

Conclusion
The UK Parliament has several key roles: law-making, scrutinising the government, representing the public, and debating national issues. While it is essential for democracy, it faces challenges like government dominance and party loyalty. Despite these limits, Parliament remains central to ensuring accountability, protecting democracy, and shaping law in the UK.