Kieron Bradshaw developed a Cohort Manager labeling feature for data exceptions in breast screening within the NHSDigital/prevention-services-design-history repository. Using Markdown and leveraging skills in product documentation and technical writing, Kieron introduced a mechanism to mark data exceptions as either raised or not raised, directly addressing the need for improved data quality and workflow efficiency. The feature reduces manual validation by providing explicit exception states, enhancing traceability and governance of data issues. Delivered as a single commit, the work demonstrates a focused approach to solving a specific workflow problem, with depth in documentation and clarity in technical communication throughout the process.