Since the seventies Charlton had numerous important international museum and gallery shows. In the Netherlands he had solo shows at art & project and at the Stedelijk Museum Amsterdam and Van Abbemuseum, Eindhoven. In Germany he exhibited at a.o. Konrad Fischer Galerie and Museum Kurhaus Kleve, in Italy at Castello di Rivoli, Torino, in Switzerland at Galerie Tschudi, in Paris at Musée d’Art Moderne and in London at Annely Juda Gallery and Tate. His work has been collected worldwide by prestigious public and private collections.