The relation between policy and scientific knowledge and procedures has been discussed extensively byLatour, 1983 and Latour, 1999. Latour (1983, p. 165) argues: “The politician has no laboratory and the scientist [and we argue the auditor] has one.” We have stressed the importance of laboratories and experiments in constructing knowledge and expertise, enabling the auditor, like the scientist, to appear disinterested and rigorous. The multi-site laboratories of auditors enable them to appeal to (apparently) robust, experimentally based, and contextually free, knowledge. No wonder, then, that the auditor appears as an expert. However, we suggest that the scientist and the auditor are always politicians, working hard to claim that their knowledge and expertise are relevant and important, driven not by self-interest, but by universal truths and the public interest. Yet expertise is always interested, with intended effects. It is produced to support the aims of some members of society, and not others.