Constitutions, McEwen (2004) adds, establish the composition, powers and functions of the institutions of the state, regulate the relations between these institutions, and enshrine the legal rights and duties of the citizenry.
Constitutions of all other states are codified. "Codified constitutions are largely written, centered around a single document incorporating key constitutional provisions that are binding on all political institutions." (McEwen 2004) In contrast, the British constitution is not written or codified in a single document. Where codified constitutions are entrenched and enjoys the protecition of a Supreme Court, and can only be repealed or amended by special provisions, the uncodified constitutions are beyond the ordinary legislative process.
3. Royal Prerogative: This refers to powers originally exercised by the monarch traditionally, among which powers. Most prerogatives are now directly exercised by ministers, such as the power to regulate the civil service, or the power to issue passports.
4. Convention: The conventions are unwritten understandings and customs, non-legal rules of constitutional behaviour of the constitutional actors. Although not supported by law, these are considered to be binding upon these actors but the judge cannot enforced them.