This is the final report from the RELB Project. This report includes updated version of previously submitted intermediate deliverables (D1, D2, D4, D5 report and D6). This D9 report details the findings from the RELB work packages:Review of existing studies – a review of past estimates in the literature of land availability for new perennial energy crops and new Short Rotation Forestry production in the UK and Europe;Desk and Field studies – report of and findings from the validation exercises carried out;Mini case studies – individual reports on the three 50x50 km cells assessed in the field study;Opportunities and barriers – report of desk study undertaken to understand why bioenergy crop production does not currently utilise the ‘available’ land and to identify opportunities to increase planting;Final summary and conclusionsFor a less detailed version of this report, the reader should see deliverable D10 which is provided in PowerPoint format