Below are some comments about whether or not we should have a codified constitution that touch upon the strengths of our current unwritten/7uncodified one.
Should the UK have a written constitution?
Supporters of the UK constitution in its current form argue that its great strength is its capacity for evolution. The constitution should not be written down in a single document, they argue, because it is constantly changing. Written, codified constitutions lack flexibility.
Against this, a growing number of people argue for constitutional reform. They claim that the constitution of the UK is out-of-date and undemocratic. These drawbacks could be remedied by producing a new written constitution.
A written constitution - arguments against
When people talk of a 'written constitution' what they mean more precisely is a constitution that has been codified (drawn up in a single document). Although part of the UK constitution is written (statute law, for example), part is not. Supporters of the current sstem argue that this is its strength. Sicne the constitution is not cast in stone, it is able to evolve and develop according to circumstances. It has a flexibility which codified constitutions do not have.
Norton (1988) points to three main arguments that are used against the introduction of a written constitution.
1. A written constitution is unnecessary
Not only is the current system flexible, it has a number of checks and balances built into it. For example, there is a balance between the executive, legislature and the judiciary. The executive does not always manage to get its own way. Opposition from within Parliament or from outside sometimes force the government's hand (as, for example, over the poll tax). Also, judgements in the courts may curb government excesses.
2. A written constitution is undesirable
A written constitution would mean that any dispute over the powers of government, the relationship between parts of the government and the relationship between government and the citizen would be settled by a court. Power would, therefore, be transferred from the executive (which is an elected body) to the judiciary (which is not). In addition, the judiciary would have the power to declare laws and actions unconstitutional. In other words, judges would have to make political decisions. Political decisions, supporters of this view argue, should be left to politicians.
3. A written constitution is unachievable
There are two main reasons why a written constitution is unachievable. First, it would be difficult to gain a consensus about what exactly should be written down in the constitution. And second, under the existing constitution, there is no body that can authorise or legitimise a new constitution. The one thing that Parliament cannot do is use its power under the doctrine of parliamentary sovereignty to destroy that doctrine, because its legitimacy to do so derives from the very power which it seeks to destroy. To create a new, written constitution, it would be necessary to start from scratch - which would cause constitutional and political turmoil that would not be worth enduring.
British Politics In Focus, Lancaster & Roberts (editors)