This article examines the mobilization of resources for the Human Genome Mapping Project in the United Kingdom. The Project was established through an award of additional funds to the Medical Research Council at a time of financial stringency within publicly funded science, accompanied by relatively little of the debate that had surrounded the U.S. initiative. It is argued, following Fujimura and Star’s terminology, that the project was “packaged” and repackaged by its proponents so that it aligned the, otherwise disparate, agendas (...) of several “social worlds.” Furthermore, by bringing together certain social worlds and not others, some issues were also excluded from discussion. In this instance, the social and ethical issues surrounding genetic mapping were accorded a much lower profile than in other national programs. (shrink)