In 1957, Bellamy moved to 'Eagle'. Bellamy took over Dan Dare part way through the ‘Terra Nova’ storyline. In 1969, he began drawing the newspaper comic strip Garth, which appeared in the Daily Mirror. He drew the first comic strips The Sunday Times had ever run in its magazine as non-fiction journalism. He also regularly produced illustrations for the BBC's Radio Times television listings magazine, in particular for the Doctor Who television programme.