1. Dummett M . On immigration and refugees. Routledge, 2002.
2. Vlandas T . Xenophobia Britannica? Anti-immigrant attitudes in the UK are among the strongest in Europe: LSE Brexit, 2016.
3. NHS Improvement. Overseas patient upfront tariff. https://improvement.nhs.uk/resources/overseas-patient-upfront-tariff/ (Accessed 24 Aug 2018).
4. Department of Health & Social Care. Upfront charging operational framework to support identification and charging of overseas visitors. Gov.uk. 2018 https://www.gov.uk/government/publications/overseas-nhs-visitors-framework-to-support-identification-and-upfront-charging/upfront-charging-operational-framework-to-support-identification-and-charging-of-overseas-visitors (Accessed 24 Aug 2018).
5. Gov.uk. NHS entitlements: migrant health guide. https://www.gov.uk/guidance/nhs-entitlements-migrant-health-guide (Accessed 24 Aug 2018).