Abstract: The accessory mounting comprises a securable attachment device, principally front-loading, comprising two horizontally connected pairs of vertically (with respect to a standing ladder) connected and extendible diverging rung-gripping hooks, incorporating a horizontal member, the mid-section of a toolbar with attached arms extending into the horizontal (26b, 26c, 2[iii], 14a). Struts (18) stemming from the attachment device (Ia, 27d) connect with a cross-member joining the arms (14a, 18, 18a, 17, 17a) which have the means to co-jointly mount adapted ladder accessories (14e). To maximise functionality, the arms can vertically rotate selectively within the horizontal plane of a standing ladder, with a capacity for limited free rotation (2 [iii], 15d, 15c), project into the horizontal at selected angles (14), and are adjustably extendable (14a, 14e), the toolbar shortened (2 [iii], 2[i]a, 2[i]b], the struts extendable and pivotal (18, 18b, 18c, 18d, 18e) and the cross-member (17, 17a) extendable.