National Insights Prioritisation Programme (NIPP) project: Implementing a learning health system for Community Diagnostic Centres (CDC) in London. Working with ARC colleagues to conduct pathway mapping for two cancer pathways (colorectal and ovarian cancer) to set the CDCs in context, alongside a wider programme developing a learning approach for the regional programme in partnership with the three London AHSNs. This includes development of an outcomes framework, site visits and interviews with staff, patients, and system leaders to gather insights to understand areas for change and improvement as well as pockets of excellence