It is always better to try and resolve any issues of harassment and bullying informally if possible (there may be some incidents which are so serious that it would not be appropriate to resolve things informally).
Go and talk to the person who has been bullying you. The sooner you are able to do this the better as very often small incidents escalate into something much more serious over time.
Take along someone to support you.
Make a note of what has been happening so you can give examples of what exactly you mean.
Talk to one of our Harassment Advisors. They can advise and support you and will treat what you tell them in confidence.
Having gone through the informal procedures with no satisfactory outcome (or if the situation is simply too serious) you should put in a written complaint which should include details of what has happened.
Staff should address it to their Head of School/Service and students send it to their Head of School.