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 NHS Business Services Authority.

However it is possible that NHS England may hold some or all of the information you require. They can be contacted at:

NHS England
PO Box 16738
Redditch
B97 9PT
Telephone 0300 311 22 33
Email: england.contactus@nhs.net  
Web http://www.england.nhs.uk/contact-us/foi/