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I have got some OS rasters but there isn't georeferencing file (TFW) with them. When I try to load them, it will obviously load in the wrong place. They are loading fine in a different GIS software (CadCorp) because the tile name is recognised (example:SJ86SW). Is that possible in QGIS? If not, while georeferencing the file can I snap to the corners of the raster to get the absolute position of these points?

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You can find the geo referencing files on our website for each of the raster products

Download TFW Here

Download the correct zip file and unzip it into the same directory of your .tif files

Any GIS will then work with the raster files

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