1. Covid-19: Government plans to spend £100bn on expanding testing to 10 million a day
2. Department of Health and Social Care. New campaign urges public to get tested twice a week. Press release, 9 Apr 2021. https://www.gov.uk/government/news/new-campaign-urges-public-to-get-tested-twice-a-week
3. Our World in Data. Tests conducted per new confirmed case of covid-19. 17 Apr 2021. https://ourworldindata.org/grapher/tests-per-confirmed-case-daily-smoothed?tab=chart&country=GBR~DNK~FRA~DEU~FIN~JPN~ESP~USA~SVK
4. House of Commons Public Accounts Select Committee. Test, track & trace (part 1). Forty-seventh report of session 2019-21. 2021. https://committees.parliament.uk/publications/4976/documents/50058/default/
5. Cancer of the cervix: death by incompetence;Lancet,1985