HP is a cubic-grain black-and-white film from Ilford Photo with a long history. It originated as Hypersensitive Panchromatic plates in 1931. Since then it has progressed through a number of versions, with HP5 plus (HP5+ for short) being the latest. The main competitor of Ilford HP5 Plus is Kodak Tri-X 400. On September 23, 2005, Ilford reintroduced its black-and-white single-use camera which includes 27 exposures of HP5 plus film.
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Ilford HP5 plus