Academic Complaints
If you have an academic complaint you should first take it up with the person concerned and if you are dissatisfied with the outcome, the Chair or Head of your Department. If the complaint is not resolved you can write to the Vice Chancellor who will appoint a senior person to conduct an investigation.
http://www2.warwick.ac.uk/services/academicoffice/contact/complain/procedure/
You can get help in conducting your complaint from The Student Advice Centre or the University Senior Tutor.