Abstract: Practice development, situated at the nurse-patient interface, is a crucial aspect of professional development as a whole. The Nursing Development Unit (NDU) is one model of structured clinical practice development. NDU have their origin in a desire to provide the best possible care for patient through the support and development of autonomous therapeutic nurses. All possible sources of NDU-related literature from 1983-1999 were reviewed to determine the effectiveness of the NDU model. The purpose of the research was to establish the role of the parent organisation in supporting the ongoing viability of NDU; to describe the key processes and activities of NDU that are instrumental in the development of nursing practice; to clarify the role of the NDU in contributing to improved patient outcome; and finally to identify the critical indicator of successful NDUs for their application in the New Zealand context. The study found that British nursing journals have played a large part in promoting the NDU model. The pioneering units were given positive coverage and this has by and large continued. Accreditation systems have been important in maintaining standards and providing a generic framework for implementation. The trend is now towards internal funding from the parent organisation. The review identified a number of key features for the successful establishment of NDUs. NDUs appear to have under emphasised the development of socio-political acumen in the nursing staff. However, the NDU does offer a model for the development of confident, assertive, autonomous professionals. The NDU model values nursing as professional practice. The author concludes that the NDU model has stood the test of time, and demonstrated the ability to be at the vanguard of contemporary practice development. The model is flexible and its potential is maximised when it is tailored to meet the need of the parent organisation. The model has been successfully established in Australia, and has the potential to be adapted and refined for the New Zealand context.