
Alamy is a British privately owned stock photography agency launched in September 1999. Its headquarters are in Milton Park, near Abingdon, Oxfordshire, United Kingdom. It has a development and operations centre at Techno park in Trivandrum, Kerala, India and a sales office in Brooklyn, New York, United States.

Bowens International was founded as Bowens Camera Service Company, a London based camera repair company, in 1923 which by the 1950s had grown to be one of the largest in Europe. In 1963, the name Bowens International LTD. was registered. In June 2016 a German investment firm AURELIUS, bought Bowens and the following year in July 2017, AURELIUS closed down the company, discontinuing all further operations.

Dewi Lewis is a Welsh publisher and curator of photography.

Garden World Images, (GWI) previously known as the Harry Smith Collection, whose origins can be traced back to the early 1950s and is one of the oldest and largest library of horticultural/botanical colour photographs in the World. The library supplies images of flowers, plants and gardens to newspapers, TV shows, publishers and magazines around the world. GWI has been involved with hundreds of publications and influential books such as Dr. D. G. Hessayon's "Expert" series as well as all of the Greenfingers Guides.

Hills & Saunders was one of the leading Victorian photographic firms, started as a partnership between Robert Hills & John Henry Saunders. They were social photographers with studios at different times in: London (society), Harrow & Eton & Rugby, Oxford & Cambridge, Aldershot & Sandhurst (army). They were successful, but ultimately unsuccessful at a business level with a number of branches failing and only their two main school branches continuing well into the 20th Century. Ultimately the Harrow photos remain saved by the school and now in private hands and the images can be seen at Iconic Photographs and the name continues in the Eton branch. In 2019 the historic company was acquired by its Oxfordshire based contemporary, Gillman & Soame, in order to preserve the extensive archives and ensure the future of the prestigious Victorian photographic studio.

Ilford Photo is a UK manufacturer of photographic materials known worldwide for its black-and-white film, papers and chemicals, as well as its range of Ilfochrome and Ilfocolor colour printing materials, before these were discontinued. Ilfochrome was formerly called Cibachrome, developed in partnership with the Swiss company CIBA-Geigy. Formerly, it 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.
Jessops (Group) Limited is a British photographic retailing company. It was established in 1935 by Frank Jessop in Leicester, United Kingdom. The company controls Jessops Europe Limited, which in turn control JR Prop Limited.

Micro Precision Products Ltd (MPP) was a British optical company that between 1941 and 1982 produced cameras and related equipment.

Negretti and Zambra was a company that produced scientific and optical instruments and also operated a photographic studio based in London.

Newman & Guardia was a British company that manufactured cameras and other fine instruments including early aircraft instruments.

Preston is My Paris Publishing (PPP) is a photography-based project that creates publications, site-specific installations, live events, digital applications, education, writing, talks and workshops. It was started in 2009 by Adam Murray and Robert Parkinson as a photocopied zine with the intention of encouraging the exploration of Preston as a subject for creative practice and to focus more attention on the city. It has been described as "politically and photographically aware", "photographing and publishing a view of a disregarded, ordinary Britain" "in a playful way".

Ross is the name of a succession of London-based lens designers and their company.

Self Publish, Be Happy (SPBH) is an organisation founded by Bruno Ceschel in 2010 that aims to help aspiring photographers to self-publish their own books. It does so through workshops, talks, exhibitions, live events, on/offline projects and publicising of books. It is based on Ridley Road, in Dalston, London, where it keeps a library of some 2000 donated self-published zines and books.

Thornton-Pickard was a well known British camera manufacturer established in 1888. The company was based in Altrincham, near Manchester, and was an early pioneer in the development of the camera industry.

Joseph Warren Zambra (1822-1897) was an Anglo-Italian photographer and maker of scientific instruments who with Henry Negretti (1818–1879) founded the firm Negretti and Zambra.