Originally a professional Land and Building Surveying practice based in the, UK. SLC Associates/Geomatic Solutions Ltd now specialise in geospatial services for the aviation industry providing precise geographical coordinates for air navigation and eTOD at over 260 airports worldwide. Geospatial Data Management System (GDMS) was created in 2009 as a bespoke Geographic Information System (GIS) for handling electronic data and carrying out obstruction analysis against Obstacle Limitation Surfaces (OLS). Unlike many of it’s counterparts, GDMS is completely standalone and does not rely on a cumbersome and expensive background CAD packages such as MicroStation or AutoCAD. GDMS is now in use at over 60 different locations around the world and is available in both Desktop and Enterprise versions.