Electrochemical imaging of holes in a polymer layer lying on a metal is demonstrated. Electrochemical imaging has been used to obtain high definition "pictures" of metal/insulator composite surfaces (under aqueous solutions), and porous materials, eg dentine and membranes, [1]. The principle of the method depends on scanning the surface of interest with a microelectrode (the "tip") which either responds to changes in potential or changes in current as it is scanned [2]. We demonstrate here how the method can be used to image holes in a thin polymer coating on a metal surface.