Projects
This page shows the 200 projects that have been approved to run in OpenSAFELY.
Projects numbered 1-155 were approved during the COVID-19 pandemic under legal powers issued by the Secretary of State: Regulation 3(4) of the Health Service (Control of Patient Information) Regulations 2002 – COPI Regulations. Under this emergency legal power, the Type 1 Opt-out [archived here] (which a patient can register with their GP surgery to prevent their GP data from being shared outside the GP practice for planning or research purposes) was not required to be upheld for research and planning purposes in the pandemic. Therefore, for projects 1-155 a patient who had registered a Type 1 Opt-out could have had their GP health information used (anonymously) in these projects.
In June 2023, the legal basis for OpenSAFELY’s operation changed [archived here] from the emergency COPI Regulations to the COVID-19 Public Health Directions 2020. Under this Direction, the Type 1 Opt-out will be upheld for all new projects (after 155).
In June 2025, the government issued new Directions that make it possible to conduct research on any healthcare topic. As such, projects after number 205 are not confined to COVID-19 studies and cover a wide range of health topics.
OpenSAFELY Projects
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Project #22: Investigating the effectiveness of the COVID-19 vaccination programme in the UK
Research project run by University of Bristol.
COVID-19 -
Project #21: Direct Oral Anticoagulant (DOAC) prescribing during COVID-19
Service evaluation project run by PrescQIPP CIC.
COVID-19 -
Project #20: Ethnic disparities in COVID19 outcomes in London: evaluation of COVID19 vaccination programme
Service evaluation project run by Department of Health and Social Care (originally application made by Public Health England).
COVID-19 -
Project #19: How has the COVID-19 pandemic impacted the need for targeted weight management interventions amongst adults in the UK? An evaluation of pandemic-associated changes in BMI and metabolic parameters.
Service evaluation project run by Queen Mary's University London.
COVID-19 -
Project #18: Understanding to what extent the actual treatment of people with ongoing symptoms of COVID-19 matches published NICE guidance?
Audit project run by NICE.
COVID-19 -
Project #17: Effects of COVID-19 on people with diabetes
Research project run by University of Manchester.
COVID-19 -
Project #16: How has COVID-19 impacted primary care treatment pathways for common colds, antibiotic prescribing and antibiotic exposure?
Research project run by University of Manchester.
COVID-19 -
Project #15: Investigating how the prescribing of groups of medicines used to treat mental health of residents of carehomes has changed over the COVID-19 period
Service evaluation project run by NHS England & NHS Improvement.
COVID-19 -
Project #14: How has the COVID-19 pandemic impacted the number of PSA tests performed to diagnose/monitor prostate cancer?
Service evaluation project run by NHS England and NHS Improvement.
COVID-19 -
Project #13: Long COVID
Research, and service evaluation project run by NHS England and NHS Improvement.
COVID-19 -
Project #12: Investigating events following SARS-CoV-2 infection
Research project run by University of Bristol.
COVID-19 -
Project #11: Assessing the impact of COVID-19 on antidepressant prescribing
Service evaluation project run by NHS England and NHS Improvement.
COVID-19 -
Project #10: Monitoring service use for CVD pathways, blood pressure tests taken, corresponding reading, and medical prescription across geographical deprivation and ethnic groups
Service evaluation project run by NHS England and NHS Improvement.
COVID-19 -
Project #9: What are the patterns of healthcare use in children and young people with SARS-CoV-2 in the 12 months following infection?
Research project run by ISARIC.
COVID-19 -
Project #8: Examining the effects of randomising dissemination of the Germ Defence website via GP practices on rates of respiratory infection, including COVID-19 and seasonal flu
Research project run by University of Bristol.
COVID-19 -
Project #5: Impact of the COVID pandemic on FIT (stool) testing
Service evaluation project run by Royal Devon & Exeter NHS Foundation Trust and University of Exeter.
COVID-19 -
Project #4: The effectiveness of COVID-19 vaccines against clinical outcomes: a test negative case control study using OpenSAFELY
Research project run by University of Nottingham.
COVID-19 -
Project #3: Vaccine Regression Discontinuity
Research project run by University of Bristol.
COVID-19 -
Project #2: Online consultations
Service evaluation project run by NHSX.
COVID-19 -
Project #1: Vaccine Eligibility
Audit project run by NHSX.
COVID-19