HALPIN, D. and BAXTER, G. 2009. The mobilisation of organised interests in policy making: access, activity and bias in the 'group system'. Full research report, ESRC end of award report, RES-000-22-1932. Swindon: ESRC [online]. Available from: http://www.researchcatalogue.esrc.ac.uk/grants/RES-000-22-1932/outputs/read/c7b5a0de-fbd8-4a0c-a0a9-9ad822e6d467