24-hour service (including study clinician)
From UK: 0808 164 4060
From outside the UK: 0044 808 164 4060 or 0044 1865 743 868
For out of hours emergency unblinding requests from clinicians, request to speak to the on-call CTSU clinician.
Please note that there are occasionally delays in answering due to the Covid-19 pandemic affecting the switchboard.
Clinical Trial Service Unit and Epidemiological Studies Unit (CTSU)
Richard Doll Building
University of Oxford
OXFORD, OX3 7LF