Procedure Patients identified from the CADAT waiting list and who meet the study criteria will be asked at assessment if they would like to participate in the study. Those who are interested in taking part will be given an information sheet, and the opportunity to ask questions before making a decision on their participation. They will then be asked to provide informed written consent by signing a consent form before continuing with the study procedure. Clinicians will remind all participants of their right to withdraw from the study at any time, which will not affect their care or right to treatment as usual. Participants will then receive the time intensive form of CBT for their SPOV.