Find these via a torrent search for "Blur ENG only." Do not download the full game; just select these specific files in your torrent client.
If you already own Blur and need English, try the registry/config method above. If you don’t own the game, consider similar modern alternatives legally: blur game english language pack 133 free
Be extremely cautious when downloading standalone "language packs" from random forums or file-hosting sites. Find these via a torrent search for "Blur ENG only