The NHS England General Medical Services 2017-18 contract made it mandatory for general practices in England to identify and manage older people proactively. In response to the national policy, the Luton Framework for Frailty (LFF) programme was developed to target older residents of Luton and offer interventions according to their frailty level. The aim of this study was to gain a deeper understanding of the LFF and the factors that affect the implementation of a proactive integrated care service for older people with different frailty levels (OPDFL).