Patients diagnosed with localised prostate cancer who will receive radiation therapy plus hormonal therapy, for 4 - 8 months, are eligible for the trial. Patients will be eligible to participate in the trial provided they have not received prior therapy for their prostate cancer. It is planned that 60 patients will participate in the research study. All patients will receive approx 4 months of induction hormone therapy (LHRH agonist and Bicalutamide) prior to starting radiotherapy treatment.