A metal wall mounting bracket for mounting an elongate mounting rail, e.g. a generally C-shaped profiled section element, as a cantilever arm to a wall or other supporting surface, wherein the wall mounting bracket is adapted to position and hold an end portion of the mounting rail in the bracket and fix said end portion to the bracket by means of at least one mechanical fastener, wherein the wall mounting bracket comprises: - a wall plate having a wall engagement side to be positioned against the wall or other support surface and a front side opposite the wall engagement side, wherein mounting holes (7, 8) extend from the front side to the wall engagement side for mounting the bracket to the wall by means of male fasteners, - a socket located on the front side of the wall plate for inserting the end portion of the mounting rail, said socket comprising at least two flange profiles (9, 10) formed monolithically with the wall plate, and having a proximal end (11, 12) connected to the wall plate and a distal end (15, 16) remote from the wall plate, wherein the flange profiles (9, 10) at the distal end (15, 16) have an embracing portion (17, 18) configured to embrace together the end portion of the mounting rail, so as to interlock with the end portion of the mounting rail thereby inhibiting movement of an inserted end portion parallel to the wall plate, characterised in that at least one of the embracing portions (17, 18) has a fixing hole (20, 21) for passing through a male fastener to fix the end portion of the mounting rail so as to inhibit retraction of the end portion from the socket, and in that the bracket furthermore comprises a supporting rim formed monolithically on the front side of the wall plate within the socket, said supporting rim being configured to interlock with the outer side or the inner side of the end portion of the mounting rail thereby inhibiting movement of an inserted end portion parallel to the mounting plate. - a wall plate having a wall engagement side to be positioned against the wall or other support surface and a front side opposite the wall engagement side, wherein mounting holes (7, 8) extend from the front side to the wall engagement side for mounting the bracket to the wall by means of male fasteners, - a socket located on the front side of the wall plate for inserting the end portion of the mounting rail, said socket comprising at least two flange profiles (9, 10) formed monolithically with the wall plate, and having a proximal end (11, 12) connected to the wall plate and a distal end (15, 16) remote from the wall plate, wherein the flange profiles (9, 10) at the distal end (15, 16) have an embracing portion (17, 18) configured to embrace together the end portion of the mounting rail, so as to interlock with the end portion of the mounting rail thereby inhibiting movement of an inserted end portion parallel to the wall plate, characterised in that at least one of the embracing portions (17, 18) has a fixing hole (20, 21) for passing through a male fastener to fix the end portion of the mounting rail so as to inhibit retraction of the end portion from the socket, and in that the bracket furthermore comprises a supporting rim formed monolithically on the front side of the wall plate within the socket, said supporting rim being configured to interlock with the outer side or the inner side of the end portion of the mounting rail thereby inhibiting movement of an inserted end portion parallel to the mounting plate.