Geo-referencing and sea tiles

Geo-referencing files allow tiles of map data to be located in their correct geographical position when loaded into a geographical information system (GIS). This is achieved by loading in files alongside the data files that contain the National Grid corner coordinates for each tile. This is especially useful if more than one tile of data is being loaded at once, as it allows for a true geographical depiction of the data.

About geo-referencing

When raster data is supplied or you download it, it is not georeferenced in any way. This means that tiles will not display in a geographical relationship to each other when loaded into a GIS.

Below there are TIFF World Files (TFW) that can be used to geo-reference raster data in ESRI® ArcView® and ArcInfo® together with TAB files for use with MapInfo® Additionally we supply .jgw files for OS Street View^® for geo-referencing JPEG tiles.*

Sea Tiles

Please note we now supply additional sea tiles and supporting TIFF World Files; these are free to download; enabling users to complete sea areas at each zoom level as required.

OS VectorMap^® District and OS VectorMap^® Local sea tiles are Geo-tagged so they don’t require additional world files

VectorMap Local raster sea tiles -5 km x 5 km

Download B&W sea tiles | Download backdrop sea tiles |

Download full colour sea tiles |

OS VectorMap District sea tiles -10 km x 10 km

Download full colour sea tiles

Download colour backdrop sea tiles

1:10 000 Scale Raster -5 km x 5 km

Geo-referencing

Download the TAB files | Download the TFW files

Sea Tiles

Download the sea tiles

Download the sea TAB | Download the sea TFW

1:25 000 Scale Colour Raster - 10km x 10km

Geo-referencing

Download the TAB files | Download the TFW files