Faceless at Maddox Gallery is Spanish artist Coco Dávez’s collection of pop-art portraits that pay tribute to her idols. Though the facial features of the subjects have been left blank, the portraits, which include the likes of Amy Winehouse, Jean-Michel Basquiat, David Bowie, Grace Coddington, Andy Warhol, Iris Apfel and Frida, are still instantly recognisable.