Institutionalised cultures and imbalances of power have been identified within the literature as risk factors for the abuse of adults with intellectual disability living in residential services. Governments in the Republic of Ireland and internationally continue to support person-centredness as a framework of care that can promote cultural change within disability services as a safeguard against abuse. However, there is limited research which seeks to explore if person-centredness as a framework of care has had much impact on changing cultures within disability services as a protective factor against abuse. This study aims to explore how adults with intellectual disability living in residential services and staff experience the professional caring relationship and the framework of person-centredness. The study was based on a phenomenological approach using thematic analysis which enabled six adults with intellectual disability and six staff to participate through one-to-one interviews. The thematic analysis resulted in three main themes: (1) Conflict within the relational dynamic between service users and staff. (2) Challenges to delivering person-centred care. (3) Shared needs. Participants reported that there was conflict within the relationship between service users and staff influenced by relational and cultural issues. Participants also experienced challenges in delivering person-centred care within the service. This study revealed that as a result of wider organisational and cultural influences, personcentred cultures, which are vital to underpin changes in power imbalances, were often undermined. This research highlights that it is not enough to have a system of quality of care guided by the principles of person-centredness alone to ensure a shift in culture and safeguard against abuse of adults with intellectual disability. Rather, consideration of the relational and cultural factors that impact their lives also needs to be built into the values and practices of services offered to adults with intellectual disability.