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.

ADVANCE NOTICE: The site will not be available on Thursday 11 October 2018 between 22:00 and 22:30 whilst routine maintenance to the system takes place. We apologise for any inconvenience this may cause.

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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.