Harman Technology Limited, trading as Ilford Photo, is a UK-based manufacturer of photographic materials known worldwide for its Ilford branded black-and-white film, papers and chemicals and other analog photography supplies. Historically it also published the Ilford Manual of Photography, a comprehensive manual of everything photographic, including the optics, physics and chemistry of photography, along with recipes for many developers.

Ilford is a large town in east London, England, 9 miles (14 km) north-east of Charing Cross. Part of the London Borough of Redbridge, Ilford is within the ceremonial county of Greater London. It had a population of 168,168 in 2011, compared to 303,858 for the entire borough.