This trial involves patients taking part in either a 12 week self-treatment programme (with or without telephone support from an expert vestibular therapist) or routine care, and completing questionnaires before and after the self-treatment, and also one year later. We will recruit 330 participants with dizziness who are registered with 30 general practices around Southampton and Berkshire. The trial will be carried out approximately between June 2008 and June 2011.