The invention relates to a support structure for an article. In particular, the invention relates to a support structure for mounting modular articles such as display units and the like upon a wall. The support structure comprises a support bracket (1), the support bracket having at least one opening (15), the opening being sized to accommodate a fixing (4) by which the support bracket may be secured to a wall (3), the opening being larger than the fixing whereby the position of the support bracket (1) may be adjusted relative to the fixing (4). The support structure also comprises a support element (2), the support element having a dimension (d) which is larger than the opening (15), the support element having a fixing hole (14) therethrough, the distance between the fixing hole (14) and the periphery of the support element (2) being non-uniform. The support bracket (1) has a support surface (12) adapted for engagement by the periphery of the support element (2). The invention also provides a method of mounting the support structure, and a support bracket for use in the structure and method.