This is the peer reviewed version of the following article: Munro A, Gillespie C, Cotton S, Busby-Earle C, Kavanagh K, Cuschieri K, Cubie H, Robertson C, Smart L, Pollock K, Moore C, Palmer T, Cruickshank ME. The impact of human papillomavirus (HPV) type on colposcopy performance in women offered HPV immunisation in a catch-up vaccine programme: a two-centre observational study. BJOG 2017; 124:1394–1401., which has been published in final form at DOI: 10.1111/1471-0528.14563. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.