I am writing to advise you that following a search of our paper and electronic records,I have established that the information you requested is not held by the Authority. Under the act I have a duty to advise and assist you and with regard to that duty may I draw your attention to the fact that the Freedom of Information Act 2000 (FOIA) does not require public authorities to manipulate data to satisfy a request for information. Also under section 21 of the Act, we are not required to provide information in response to a request if it is already reasonably accessible to you. The information you requested is available on the internet from the Department of Health?s web-site, the address of which is (http://www.publications.doh.gov.uk/prescriptionstatistics/index.htm). The information is contained in the Prescription Cost Analysis reports listed there.