Harriet Sands focused on documentation maintenance for the nhsengland/datascience repository, addressing the reliability of internal knowledge assets. She audited and updated case study hyperlinks across multiple Markdown files, ensuring that users could access current and accurate resources. Using Git for source control and cross-file coordination, Harriet systematically identified and fixed outdated links, reducing the risk of broken references and improving overall documentation hygiene. Her work emphasized attention to detail and a methodical approach to documentation quality, though it was limited in scope to a single bug fix over the month. The updates enhanced user trust and navigability within core patient-data documentation.