I've got my finance forms through already for next year. My LEA seem to have things sorted compared to other areas. I sent my form in late for 09/10 and still got my payment on time.
Forms for 2010/2011 are online now. If you have a disability (including dyslexia, mental illness, invisible and physical disabilities) you can apply for disabled students' allowance and the special support grant. The SSG is slightly more than the maintenance grant and it doesn't affect your entitlement to the full loan like the MG does. The special support grant is to cover transport costs, extra food (if you have an intolerance), a fridge to keep medicines in (although some uni's will provide this) and other essential things you need.
Also, if you're 19 or over and not working, fill in a HC1 form to get free prescriptions, travel expenses for appointments, sight tests and dental treatment. Even if you are working part time, you probably won't earn above the threshold or have enough savings to not qualify. I don't work, get just below the full SSG/loan/bursary entitlement and qualify for the benefit.