I did the unit 1 last year and am redoing it this year. I got a C last year but think I can do better. After re-revising it I think that Examples are the keyy! For example, Delegated legislation> Orders in Council> Terrorism act 2001, energy reserve order 2000, Afghanistan Act 2001, foot-in-mouth crisis 2001. etc.
And for Green papers- consultative document, used to evoke discussion & debate by interested & effected parties. example - High speed rail 2010.
white papers- firm proposals of the bill.
both part of the Informal law-making process