Crews were called at 21.05 to reports of a four storey derelict mill on fire, 100% involved in flames. The building measures approximately 66x48m.
Eight fire engines plus an aerial ladder are at the scene.
Firefighters (including support crews) from Huddersfield, Rastrick, Bradford (aerial ladder), Cleckheaton, Meltham, Slaithwaite, Skelmanthorpe, Shipley, Pontefract, Killingbeck, Halifax and Holmfirth are in attendance.
UPDATE: 03.56 - The fire has been extinguished and all crews have left the scene.