European Parliament (House of Lords Disqualification) Regulations 2008

My Lords, is not the point in answer to the noble Lord, Lord Kingsland, that a constitutional convention is not a law because it is neither a common law decision binding nor is it a written rule in a statute? It therefore does not satisfy legal certainty and would not be regarded by a European lawyer as being law in the sense in which European law understands it, however much constitutional conventions are understood in our own system.