ABOVE: The dining room at new London hotel At Sloane, where François-Joseph Graf’s interiors include more than 700 lights made by Collier Webb, based on original Arts & Crafts designs. OPPOSITE, LEFT TO RIGHT: Young designer William Harris, one of the 2023 Green Grads, showing his chandeliers made from glass bottles at Artefact; spools of thread at Pierre Frey, the French design house that is keeping several heritage craft skills alive, from embroidery to hand-weaving