Ordnance Survey OpenData Downloads

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Link: Ordnance Survey OpenData Downloads

 

Ordnance Survey OpenData can be downloaded for free (no registration required).

 

Ordnance Survey OpenData download page:

 

 

I tried the first download (1:250 000 Scale Colour Raster™) covering 'All of GB'

 

After extracting the downloaded data I had 56 map tiles:

 

 

Detail from a downloaded map tile:

 

 

Map tile originally 4000 x 4000 Pixels.