The United Kingdom's National Health Service (NHS) is currently navigating a period of profound structural reorganization, driven by a national mandate to transition from fragmented, local digital solutions to a centralised, unified "digital front door" via the NHS App. This transition, codified in the Wayfinder programme and the 10-Year Health Plan, has raised fundamental questions regarding the longevity of the third-party Patient Engagement Portal (PEP) market. NHS Englan