A pallet of stock went up in flames at an Aristoc in Belper on September 19, just a year after a similar incident occurred at the site.
Police were called to the premises at West Mill, Bridgefoot, at 4.20pm, where they found the stock and a pile of cardboard still ablaze.
It was very similar to a fire which took place almost exactly a year ago, on September 21, 2010, which was caused by industrial drying machine catching fire and filling the building with smoke.
The fire on Monday was quickly put out by firefighting crews, who responded to an automatic fire alarm connected to the station.
They removed the burning pallet from the warehouse and spent 20 minutes dampening it down.
The team was later joined by additional firefighters from the Nottinghill Road fire station in Derby. They departing from the scene at 5.40pm.
Brand director David Hinchliffe said: “It was a small fire. No one was hurt… We lost one palette of stock from our yarn store.”
Operations are now back to the normal at the factory, which manufactures hosiery for Aristoc, Pretty Polly and M&S’ own brand.
Firefighters are investigating to determine the cause of the fire.