National gateways and data access services · Health record databases
OpenSAFELY
Also known as: OpenSAFELY
Not yet verified by a curator
Secure analytics platform running code against the GP records of most of England’s population without data leaving the GP system suppliers.
Application required Free TREHow it can replace animal studies
Whole-population GP data can answer questions about disease and treatment directly in people.
How to get access
Project application; all code is published openly.
- Access level
- Application required
- Who can use it
- Approved researchers; projects must meet NHS England criteria.
- Cost
- Free
- Secure research environment
- OpenSAFELY
Data held
Population
From NAMsDB (https://namsdb.uk/resource/opensafely), release data under CC BY 4.0. Printed 26/10/2026.