Information for Centres

Recruitment Tips for Centres

  • Identify potential participants early in the treatment pathway through flagging/screening at MDT meetings and/or by screening weekly clinic lists. Brief slide sets for introducing the trial at MDTs are available in the members area.
  • A Patient Introductory Leaflet is now available to introduce patients to the trial ahead of (potentially) approaching them later in their treatment pathway.
  • Tracking potential participants through their treatment can also be helpful (for example, using a spreadsheet recording treatment appointments which can be regularly reviewed). Please see here for an example of a screening log for the Upper GI cohort.
  • Liaise with Clinical Nurse Specialists in surgical clinics to see if potential participants are willing to be contacted. If a patient is not seen in clinic, the Participant Information Sheet (PIS) can be posted, a cover letter is now available for this.
  • Check the FAQs in the members area for answers to some common eligibility queries.


For a copy of the current protocol please log in to the members area or contact the trial team:

Timing of trial entry

Please click on the relevant cohort to view treatment pathway diagrams.

Breast Colorectal Gastro Prostate

Sample Collection

All participants that are registered in Add-Aspirin will be asked if they consent to donate a blood sample and a tumour sample for future cancer research. Samples should be sent to your centre’s allocated bio-bank. Please refer to the Add-Aspirin Translational Manual and Biobank addresses available in the members area for more information on what to send.


Add-Aspirin Initiation slides and MDT slides are available in the members' area of the Add Aspirin website. Please contact us for more details:

Contact Details

If you are an individual who is interested in taking part in Add-Aspirin, please talk to your doctor who will be able to consider whether you are suitable for the trial.

For healthcare professionals

Please log into the members area for Add-Aspirin contact details.

Register Interest

For healthcare professionals

If your centre would like to recruit participants to Add-Aspirin, contact us:

Register a participant

From Monday 16th March 2020, to RANDOMISE a participant in the UK please call +44 (0)20 7670 4925, rather than the usual randomisation line.

To RANDOMISE a participant from Republic of Ireland or India only, please use the 'Register a participant' link above to randomise online. Please make sure to press 'Randomise' once logged in to the server.

We have been experiencing intermittent issues with the trial websites. In the event of an emergency unblinding outside of office hours (including over the Easter bank holidays), if the usual unblinding links are not working, please telephone +(0)20 7670 4906 or +(0)20 7670 4892 to reach one of the Trial Managers.

Unblind a participant in the UK

Unblind a participant in the RoI

Unblind a participant in India