3 fundamental constitution principles:

doctrines of:

rule of law

parliamentary supremacy

separation of powers

Dicey's rule of law (1886):

No retrospective or arbitary laws

no puishment unless the law forbids

Equality before the law

Government should be bound

Doctrine of Parliamentary Supremacy:

Parliament has the freedom to make laws of any kind

No-one outside parliament can override the law

Doctrine of Separation of Powers Montesquieu (1748):

Legislative - Executive - Judiciary

Functions undertaken by separate bodies

no-one should work in more than 1 branch

no branch should control or interfere with another

= checks & balances