Combining (meta-) theoretical extension and practical application of models of politeness, the collected works of this special edition promise to make a significant and lasting contribution to the field as well as signalling an important milestone in interactional and pragmatics research more generally. Focussed to a greater or lesser extent on the ‘impact’ of the research on the social, occupational or legal world around us, the collected papers here are all in effect ‘interventionist’ (cf. Antaki 2011: 8). That is, the collected works of this special edition, whether dealing with remote interactions via a call centre (Jagodzinski and Archer, (this volume); Harrington, (this volume)) or face-to face interaction via an appraisal or a busine...