Intended for healthcare professionals


The Secure Anonymised Information Linkage (SAIL) system in Wales has privacy protection at its heart

BMJ 2014; 348 doi: (Published 03 April 2014) Cite this as: BMJ 2014;348:g2384
  1. Ronan Lyons, professor of public health1,
  2. David Ford, professor of health informatics1,
  3. Kerina Jones, associate professor of health informatics1
  1. 1Swansea University, Singleton Park, Swansea SA2 8PP, UK
  1. r.a.lyons{at}

We would like to comment on the recently published article on the use of general practice data for research.1 The article is correct in its general description of the Secure Anonymised Information Linkage (SAIL) system in Wales. However, some of the phrases used, such as: “The Welsh system does not hold any fully identifiable data, and researchers need consent from individual patients to access red data” …

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