1. Joint Committee on Vaccination and Immunisation. (2020). Joint Committee on Vaccination and Immunisation: advice on groups priority for COVID-19 vaccination, 2nd December 2020. Available from: https://www.gov.uk/government/publications/priority-groups-for-coronavirus-covid-19-vaccination-advice-from-the-jcvi-2-december-2020.
2. Public Health England. (2021). COVID-19: the green book, chapter 14a. Available from: https://www.gov.uk/government/publications/covid-19-the-green-book-chapter-14a.
3. Office for National Statistics. (2019). International migration and the healthcare workforce Available from: https://www.ons.gov.uk/peoplepopulationandcommunity/populationandmigration/internationalmigration/articles/internationalmigrationandthehealthcareworkforce/2019-08-15.
4. Skills for Care. (2020). The state of the adult social care sector and workforce in England Available from: https://www.skillsforcare.org.uk/adult-social-care-workforce-data/Workforce-intelligence/publications/national-information/The-state-of-the-adult-social-care-sector-and-workforce-in-England.aspx.
5. NHS England and NHS Improvement. (2021). COVID-19 weekly announced vaccinations 15 April 2021.