Agroforestry systems, in which forestry and agricultural operations are integrated on the same land area, offer considerable potential as a flexible alternative land use system, which is consistent with EU policy on environmental protection, rural employment and the probable consequences of current changes to the common agricultural policy. This study will aim to evaluate the potential of silvopastoral land use systems in relation to agricultural output, production of high quality timber and environmental impact. Trees have already been planted into sheep grazed upland and lowland pasture at a range of spacings. Data on tree, pasture and animal performance will be collected annually from these sites for use in on-going cross-site assessments, including the development of biophysical and bioeconomic models. Further assessments will include those of tree form in relation to timber quality, together with additional microclimate and pasture biodiversity and production measurements. In addition, a previously conducted literature review of farmers’ attitudes to agroforestry will be followed by a more focused assessment of opinion, by means of a telephone survey. It is anticipated that an understanding of the interactions between the various factors involved will have a significant effect on the overall economic output of agroforestry systems.