Sony in Tokyo said no staff had been injured in the blaze.
In addition to DVD and BD products from the film studios, numerous independent record labels from the UK and across Europe fear they have lost a catastrophic amount of stock in the fire.
Independent labels often operate on a shoestring, with tiny margins between success and failure. Last night, years of work from countless imprints went up in smoke when the riots in London claimed the warehouse, a music label said. "So all the stock we got left is sitting in our office. Devastated is the word."