Prodat Systems has now made its digital mapping product, Promap, available on a pay-per-use basis on the Internet. Until now Promap, which uses Ordnance Survey large-scale mapping, was available only on CD. In addition to roads, it shows details of site and field boundaries and includes the outline of individual buildings. It offers a number of ways to select sites, and can then calculate areas. Information can be printed or exported as DXF files for use in geographic information systems (GIS) or CAD drawings. Find out more at www. promap. co. uk If you feel that you or your clients will be best served by the use of aerial photography, then you may be interested in another payper-view service. Imagexpressplus from Getmapping uses images from its Millennium Map, the first-ever aerial survey of the entire UK. High-resolution aerial images are geo-corrected to match.