Objectives
This implementation trial aims to assess whether a universal offer of HPV self-testing (offered to all people eligible for cervical screening) achieves non-inferior screening coverage (equal) to a universal offer of cervical cytology alone (the present NCSP).We hypothesise that a universal offer of HPV self-testing leads to at least as many women having cervical screening as standard care (universal offer of cervical cytology only).A concurrent qualitative component will explore barriers and facilitators for women accessing the triage system (to cytology or colposcopy) following a positive high-risk HPV result. Stakeholder views on delivering a universal offer of HPV self-testing in primary care will also be sought. Additionally, barriers and facilitators will be investigated for 25-year-old women joining the NCSP, and for women who are not enrolled in primary care.