I have download a 1: 25000 map from Digimap. It came as a tif file along with a tfw file. When I try to import the tif file as a raster layer, I get the following message: 'this layer appears to have no projection specification. By default, this layer will now have its projection set to that of the project, but you may override this by selecting a different projection below'. I then need to pick a projection.
The message suggests that the tif isnt georeferenced. How can I georeference the image to a WGS84 projection?