Compiled at Oxford Brookes University as part of a project on the potential for using GIS and Expert System technology for Environmental Impact Assessment (EIA). Lists digital data sets held by over sixty data supplying organisations and twenty nine government departments in the UK. It refers to over a hundred digital map products and over 100,000 other environmental and socio-economic data sets. Each entry contains extensive information on data type, specification, format, supply media, scale and cost. The Directory also contains a section which refers to over twenty other smaller and more specialised directories, meta-databases and information sources. Available as a print publication.