The central concept of the 'moral economy' is that markets are 'embedded', that is, historically constituted in institutions, spaces, and practices. 1 The idea is most strongly associated with E. P. Thompson, 2 but can also be identified in the substantivist economics of Karl Polanyi. 3 The moral economy is sometimes associated with the traditional values of a static, regulated market in opposition to the modern values of a dynamic, 'free' market; but rather than this simplistic contrast, it is more useful to consider the moral economy as expressing a tension between market forces and ethics that is present in all historical periods. 4 Even 'free' markets depend on shared rules, norms and assumptions that define 'right' behaviour.Thompson applied the concept of moral economy to the specific phenomenon of crowd action in response to price rises. A broader approach can be seen in recent work on the norms and practices of credit and exchange, which shows how access to credit was mediated by the reputation of individuals and households in the community. 5 This paper takes a similar approach to market Archival research for this article was funded by the British Academy, for which I am extremely grateful. Special thanks to Simon Middleton and Gary Rivett for commenting on preliminary drafts.