1. Department of Health and Social Care. Guidance: the NHS Constitution for England. Updated 14 Oct 2015. https://www.gov.uk/government/publications/the-nhs-constitution-for-england/the-nhs-constitution-for-england.
2. Bagot M. NHS hospital demands £18k for hip op as trust sells treatments that used to be free. Mirror 2019 Jun 9. https://www.mirror.co.uk/news/uk-news/nhs-hospital-demands-18k-hip-16544619.
3. A sixth of hospitals in England have expanded private patient options this year, the BMJ finds
4. Warrington Joint Strategic Needs Assessment. The English indices of deprivation 2015. Dec 2015. https://www.warrington.gov.uk/downloads/file/9153/jsna_2015_-_deprivation_profile_imd_2015pdf.
5. Warrington and Halton Hospitals NHS Foundation Trust. My Choice service. Updated 20 Jun 2019. https://whh.nhs.uk/about-us/news-events-and-features/latest-news/my-choicec-service.