Clinical Benefit of Cognitive Behaviour Therapy (CBT) for Insomnia in Cancer Patients

Inclusion Criteria: * Meets clinical criteria for insomnia. * Diagnosis of breast, prostate, colorectal or gynaecological cancer. * In follow-up phase with no further anti-cancer therapy planned. Exclusion Criteria: * Anti-cancer chemotherapy or radiotherapy within 4 weeks of trial entry. * Evidence of sleep apnoea or other sleep disorder. * Evidence of untreated major depressive disorder.