99. Principle of legality.

The principle of legality — that any interference with a qualified Convention right be prescribed by law1 — is derived from the requirement in a number of the Convention rights that restrictions be 'lawful', 'in accordance with the law' or 'prescribed by law'2. The concept of legality is a semi-autonomous one, meaning that it involves both a Convention and a domestic interpretation3. For a restriction on a Convention right to be lawful it must comply with the three components of the concept of legality: it must have a legal basis