The separation of powers is the backbone of how the UK is governed. It divides three core functions — making law, putting it into effect, and interpreting it — between Parliament, the Government, and the courts, so that no single body holds unchecked power. For a solicitor, this isn't abstract theory: it explains when an executive decision can be challenged, why judges decide cases free from political pressure, and how far ministers can go before they need an Act of Parliament behind them.
This lesson builds the picture step by step, from the core idea through to the tools that keep each branch in its place.
- The Doctrine — what separation of powers means and the three branches of the state.
- Overlap of Executive and Legislature — how ministers sit in Parliament and why the Government needs the Commons' confidence.
- Judicial Independence — the reforms and protections that keep judges free from interference.
- Parliamentary Privilege and the Courts — why the courts won't question what happens inside Parliament.
- Limits on Executive Power — what the Government cannot do without legal authority.
- Delegated Legislation — how ministers make detailed rules within limits Parliament sets.
- Judicial Review — how courts police the legality of public power.
- The Human Rights Act 1998 — how rights are protected while Parliament keeps the final word.
- Constitutional Conventions and Accountability — the unwritten rules that keep ministers answerable.