This paper describes the overall process, which is implemented within Nuclear Electric for assuring the Quality of NDT carried out on its plant. The starting point of all inspections is a defined Quality Grade, which is a measure of the importance of the inspection to the safety of the plant item. This Grade then governs the controls to be applied throughout all aspects of the NDT activity from Technical Justification of the NDT Procedure through to auditing of the NDT carried out on site. The paper concludes with several examples illustrating the implementation of the process.