Purpose of study To obtain responses to a questionnaire on likely trends in the clinical practice of restorative dentistry from a national sample of general dental practitioners (GDPs) who were principals of group practices in the UK. Basic procedures A panel of nine experts had been convened previously to define areas of trends in restorative dentistry in the UK and to formulate these into statements. Twenty trends were identified and framed into a 22-item questionnaire based on the trend statements. The questionnaire was sent to a national sample of 2800 principal dentists in group practices. Names of principal dentists were taken from the Yellow Pages directories, a group practice being defined as at least one principal dentist and one other practitioner. Levels of agreement for questionnaire scores of ≥70% for all segments of a statement were taken as indicating a possible trend. Main findings Of the 2800 questionnaires sent out, 1448 were returned, a return rate of 52%. Of these, 1217 questionnaires were usable, an overall response rate of 44%. Good agreement was obtained for 14 statements (64%). Principal conclusion: The 14 trend statements that scored a level of good agreement were taken as indicating possible trends in dentistry in the UK as perceived by those GDPs who responded to the questionnaire. However, in view of the fact that the 1217 usable questionnaires received reflected the opinions of 10% of the principal dentists in group practice in the UK, this will not be representative of all principal dentists in practice. Nevertheless for the purposes of gaining some insight into trends in restorative dentistry, it could be considered to be of value.