Three Hereford & Worcester Fire and Rescue Service crews are responding to an ongoing incident at Special Metals Wiggin in Hereford.
West Mercia Police are also at the scene.
A spokesperson for Hereford & Worcester Fire and Rescue Service told Your Herefordshire:
“Three Hereford & Worcester Fire and Rescue Service crews – one each from Hereford, Leominster and Ross-on-Wye Fire Stations – plus the water carrier from Leominster were called at 08:39 on 28 October to a fire at a factory in Holmer Road, Hereford.
“A fire involving a high voltage electrical cable was extinguished by fire service personnel.
“The incident is ongoing.”