Kitching is one of the world’s foremost practitioners of letterpress typographic design and printmaking. Spanning more than 50 years, his new, lavishly illustrated monograph leads us from Kitching’s first typographical experiments under the auspices of mentor Anthony Froshaug to his iconic creations at The Typography Workshop. It showcases his most colourful and expressive pieces, including his prolific work for the Guardian, the National Theatre, British Library, Tate Modern, Penguin Books and Royal Mail. He talks to Clemency Burton-Hill.