Marchant was born on 23 October 1929, at
Cape Town, the second son of Kathleen (née Cunningham) and Henry Marchant. His father died while on active service in the Second World War, when Marchant was 15; and he and his siblings were brought up by his devout Catholic mother, grandmother and aunts. As a teenager he taught himself to paint; and in 1950, at the age of 19, was given a solo exhibition at the Argus Gallery in Cape Town, South Africa. In 1950, Marchant worked his passage on a merchant ship and arrived in London with little money and no contacts. He was not eligible for a grant to study in the UK. He telephoned
Jacob Epstein out of the blue and visited him with a portfolio of drawings and paintings. Epstein was encouraging and gave him a letter of recommendation to the
British Council, which provided a grant to allow him to study for three months at the
Saint Martin's School of Art. Forced by financial and political constraints to return to South Africa, they finally moved permanently to the UK three years later, in 1956; and in 1959 Marchant received a grant to study full time at the
Central School of Arts and Crafts. == Career ==