Is the UK Constitution Too Flexible for Its Own Good?
Most countries have a clear constitution. We do not. There isn’t a single document, a grand opening statement starting with “We the people,” or a sacred text under glass. Instead, the UK constitution is made up of different pieces: Acts of Parliament, court decisions, political conventions, and accepted principles that aren’t written down. It’s strange, chaotic, and famously flexible.
This flexibility is often seen as a strength. However, it has raised an important question: if rules can be changed so easily, how strong are they?
Unlike countries with a written constitution, the UK’s constitutional setup changes as politics changes. Parliament can pass laws that fundamentally alter the constitution with just a simple majority. There is no higher law above Parliament and no constitutional court that can strike down legislation. In principle, this makes the system very democratic. If the public changes its mind, the law can change too.
In more stable political times, this adaptability seems reasonable. The UK avoided violent constitutional crises partly because it didn’t freeze its political system in place. Expanding voting rights, creating the welfare state, and devolving power to Scotland, Wales, and Northern Ireland were all accomplished without rewriting a constitution from the ground up. Flexibility allowed for progress without revolution.
But flexibility has its downsides too.
Since there are few legal barriers to changing the constitution, a lot relies on good faith. Political conventions (rules that aren’t legally binding but are generally respected) are important for keeping the system running smoothly. Ministers are expected to be truthful in Parliament. The monarch is expected to stay politically neutral. The House of Lords is expected not to obstruct major manifesto pledges.
The issue is that conventions only work if those in power respect them.
Recent political events have shown how delicate these unwritten rules can be. The prorogation of Parliament in 2019 led the Supreme Court to step into what many thought was a purely political matter. The court ruled unanimously that the government acted unlawfully, effectively establishing constitutional limits on the spot. This decision safeguarded parliamentary sovereignty but also showed how when the constitution isn’t clearly defined, judges sometimes must interpret it during crises.
This raises an uncomfortable question: should we only discover constitutional limits when they are broken?
Supporters of the current system argue that writing down the constitution would make it too rigid. Once rules are documented, changing them can be hard and may require supermajorities or referendums. They point to examples of countries where constitutional gridlock paralyzes politics or where outdated rules stay unchanged because amendments are too complex. From this viewpoint, the UK’s constitution works precisely because it can bend without breaking.
Yet critics argue that something that bends too easily can also be reshaped quietly. If Parliament is sovereign and unrestrained, then a government with a strong majority could push through changes that impact fundamental rights, the role of the courts, or the balance of power among institutions, without broad agreement.
Legally, this is permitted. Constitutionally, it feels risky.
This is especially concerning in a time of increasingly personalised politics. When political culture turns more adversarial, counting on restraint instead of rules starts to seem naïve. A flexible constitution assumes responsible actors. But constitutions are, in many ways, meant to protect against irresponsible ones.
This doesn’t mean the UK must swiftly adopt a rigid, written constitution. The conversation isn’t just about chaos versus control. Some suggest finding a middle ground with clearer constitutional statutes, stronger protections for key principles like judicial independence, or a more defined role for the courts in constitutional matters. Others argue that the real problem isn’t legal structure but political culture; that no document can replace integrity.
Still, it’s significant that we only seem to seriously discuss constitutional reform during times of crisis. Flexibility feels comfortable when everything runs smoothly. However, it becomes troubling when it doesn’t.
Maybe the real question isn’t if the UK constitution is too flexible, but if flexibility without clarity is sustainable. An unwritten constitution depends on shared understanding. In a fractured political environment, such understanding is becoming increasingly hard to achieve.
The UK constitution has endured for centuries by adapting. Whether it can keep doing so without stronger foundations is no longer just an academic discussion—it’s a pressing political concern. The answer may influence not only how we are governed but also how secure we feel about the limits of power itself.
Liza Arshad
Sources-
Codified vs. Uncodified Constitutions: Pros and Cons - Owlcation
