Understanding UK government budget

 Please help me understand the UK government budget. HM Treasury provides lot of data but it don't understand it. (http://www.hm-treasury.gov.uk/spend_sr2010_documents.htm)

Question 1.
HM Treasury (HMT) says the Total government expenditure is £697b. Where the money goes from HMT? Is there any finite list of institutions that get money directly from the government budget?

Question 2.
What is Annually Managed Expenditures (AME) and what is Departmental Expenditure Limits (DEL)?
If I want to know how much money was spent on let's say Home Office, should I look on AME or DEL or both?

Thanks.