Employing an actor-oriented and multi-sited approach, this thesis analyses the policy interfaces between the multiple actors involved in ActionAid's Savings and Credit programme in Tamale, Northern Ghana. It takes as its starting point an interface approach to development interventions, viewing them as mediated by various actors who invariably have different interests and priorities, dissonances and discontinuities inevitably arise between projected and actual outcomes. Interface analysis problematises the notion that development interventions are implemented according to linear blueprints which culminate in projected outcomes, highlighting the agency of actors that transform, undermine and subvert policy and give rise to the host of unacknowledged and unplanned outcomes. Tracking the genesis and implementation of the programme, this study demonstrates how the assumptions which underpinned Act~onAid' s Savings and Credit programme had little resonance in the specific social relations, because they developed and evolved from international development discourses which inevitably neglected context specificity. Through the ethnography of local social relations, the uncertainties and contingencies of everyday life are highlighted, as well as the dynamic ways in which relationships and social obligations were being (re )negotiated. A central concern of this thesis is to analyse the 'interlocking' of the ActionAid's Savings and Credit programme with the different 'projects' of the female programme participants and local fieldworkers in Tamale. Savings and Credit participants integrated the Savings and Credit programme into their lives to produce outcomes that met their particular circumstances, but challenged its assumptions. The way in which fieldworkers undermined and subverted aspects of ActionAid policy, was a reflection of their different realities. Thus, through the agency of the actors involved, ActionAid policy was effectively reconstituted, albeit in unintended and unacknowledged ways. Identifying and analysing the implications of the social and intellectual distance among actors involved in the policy process, the thesis argues for the need for situated ethnographies to set the policy agenda and inform development interventions such as microcredit programmes