This entry relates to data collected as part of the development and usability testing of a very brief intervention for personalised cancer risk assessment to promote behaviour change in primary care published in the linked paper. Two datasets are available. The first is the pseudo-anonymised quantitative dataset collected from the questionnaires completed by healthcare professionals as part of the usability testing of the intervention. The questionnaire used to collect this data is attached within this record. The questionnaires are published as supplementary material within the paper and also included here and the details of the coding of each variable are included with the dataset. The second dataset is the pseudo-anonymised transcripts from the qualitative interviews and focus groups conducted with healthcare professionals as part of the study. The schedule used for those interviews and focus groups and the slides shown during the sessions are attached with this record. Consent was given by participants to share anonymised data with other responsible researchers. As consent was not given to share publically it is not possible to add the data to the repository. Instead, the data are stored within the Primary Care Unit and researchers can request access by contacting Dr Juliet Usher-Smith (jau20@medschl.cam.ac.uk) or PCU_DATA@medschl.cam.ac.uk. Applicants will be required to complete a Data Access Agreement that will indicate the criteria for data access and conditions for research use and will incorporate privacy and confidentiality standards to ensure data security.