1. NHS England . Consultant-led referral to treatment waiting times. NHS. www.england.nhs.uk/statistics/statistical-work-areas/rtt-waiting-times
2. Department of Health & Social Care . The NHS constitution for England. DHSC, 2021. www.gov.uk/government/publications/the-nhs-constitution-for-england/the-nhs-constitution-for-england
3. NHS England, NHS Improvement . Referral to treatment (RTT) waiting times statistics for consultant led care: 2019/20. NHS. www.england.nhs.uk/statistics/wp-content/uploads/sites/2/2020/11/RTT-Annual-Report-2019-20-2.pdf
4. NHS England . Delivery plan for tackling the COVID-19 backlog of elective care. NHS, 2022. www.england.nhs.uk/coronavirus/wp-content/uploads/sites/52/2022/02/C1466-delivery-plan-for-tackling-the-covid-19-backlog-of-elective-care.pdf
5. Lord Carter of Coles . Operational productivity and performance in English NHS acute hospitals: unwarranted variations. Department of Health, 2016. https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/499229/Operational_productivity_A.pdf