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 the Department of Health and Social Care may hold some or all of the information you require. 

They can be contacted at:

Ministerial Correspondence and Public Enquiries Unit
Department of Health and Social Care
Richmond House
79 Whitehall
London
SW1A 2NS

Contact form https://contactus.dh.gov.uk/?openform 

Telephone 020 7210 4850 
Fax 020 7210 5952 
Textphone 020 7210 5025