Output your results from the NHS England Secure Data Environment (SDE)

An introduction to the Safe Output service offered by the NHS England Secure Data Environment (SDE).

This service lets researchers request approval to take analysis or code out of the Secure Data Environment (SDE).

You must submit all outputs for checking before you can download or share them.

Safe outputs for the NHS England SDE

The Output your results service is the implementation of the Safe Outputs principle from the Five Safes framework for the NHSE SDE.

The service applies statistical disclosure controls and established governance processes to support the safe dissemination of research findings. By enabling researchers to share robust evidence while protecting patient confidentiality, the service plays a vital role in maintaining public trust and confidence that health data are being used responsibly, securely, and for public benefit.

How the service works

Prepare your analysis or code file in the virtual desktop environment (VDI) in alignment with our disclosure control rules and guidance.

Submit your request using the Outputs and Imports tool in the VDI.

The checking team will then review your request. We aim to complete checks within 3 working days, but some requests may be completed sooner.

You will get an email to tell you if your request has been approved or rejected. If approved, the email will include a link to download the file. If rejected, the email will explain why and what to do next.

Further information

To find out how to access the NHS England SDE, read the process overview. It explains what data is available and how to start an application.

For more detailed instructions on our Outout your results process, read our user guidance.

Last edited: 15 July 2026 8:28 am