You will normally have to do a final I&E to make sure you don't owe any extra money and possibly payslips and bank statements - your IP will tell you exactly what.
Sharing from experiences of dealing with debt
The greatness of a man is not in how much wealth he acquires, but in his integrity and his ability to affect those around him positively.
Bob Marley. http://kallis3.blogs.iva.co.uk