Waddle this way! The sign-making genius who kept Britain’s drivers (and ducks) safe

Airports, road signs, animal warnings … Margaret Calvert revolutionised how Britain looked and her brilliantly clear designs are still used today. We meet the font legend and Porsche loverStuffed with a barrage of road signs, artful modernist chairs and all the tools of her trade, Margaret Calvert’s studio occupies the ground floor of her trim terrace house in Islington, London. She still draws by hand, using coloured pencils, ink pens and gouaches, echoes of a simpler time when the