Walker was born in England in 1970. His interest in photography began at the Condé Nast library in London where he worked on the Cecil Beaton archive for a year before college. Upon leaving college in 1994, Walker worked as a freelance photographic assistant in London before moving to New York City as a full-time assistant to
Richard Avedon. In 2019, Walker photographed the album artwork for
Harry Styles' second album,
Fine Line. Walker's
Wonderful Things exhibition at the
Victoria and Albert Museum, London in 2019–2020 consisted of 10 rooms containing new projects, each one inspired by various artefacts from the V&A. Over the course of three years, Walker visited the V&A’s numerous storerooms, met with curators and technicians, even scaled the roof of the museum and climbed through the Victorian passages underneath it, in search of the items that would inspire each series. == Exhibitions==