Patient views about Extended Scope Physiotherapy services have rarely been sought. This study aimed to establish the dimensions of quality that were important to patients referred to such a service. This was a qualitative study using face-to-face semistructured interviews and was conducted at one tertiary teaching hospital in the United Kingdom. Thirty-four consecutive patients referred to a spinal extended physiotherapy practitioner service were invited to participate. Thirteen provided informed consent, and 12 were interviewed. Semistructured interviews were recorded and transcribed, and a framework qualitative data analysis was performed. Data analysis revealed five key themes that were important to the participants in the quality of the service: provision of information, professional skills, interpersonal skills, outcome, and patient care pathway. This study has produced key themes within the structure, process, and outcome of a spinal extended physiotherapy practitioner service that are determinants of quality by patients about to use this service. This preliminary work will be used to develop a questionnaire for patients using this service.