The Over-Volunteering Prevention System (TOPS) is run by the Health Research Authority. If you are having trouble accessing your account or your account has not yet been setup, please contact tops.hra@nhs.net or 0207 972 2509.

IMPORTANT: Advance notice of essential maintenance work scheduled for Friday 14 December 2018

The system will not be available to users from 20:00 to 20:30 GMT on Friday 14 December 2018 while essential system maintenance work is carried out.

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The Over-Volunteering Prevention System (TOPS) is run by the Health Research Authority and helps prevent volunteers from taking part in trials of new medicines too frequently.
All personally identifiable information gathered is securely held and fairly processed.

Our updated privacy policy can be found, here.