I know that you cannot leave the country until you have the correct paperwork from the bank, library, CID and employer that you are leaving behind no crimes or debts. It is your employers job to do this, I don't know much about other things but have just helped a friend who was leaving. The RP takes about a month usually, following CID, fingerprints and medical. The new CID centre is excellent and the staff there were really nice when I went.