Support element for at least one foot of a fence or a security panel, this element comprising at least (a) a bearing means having a first face adapted to bear against a floor or a surface and a second face opposite the said first face adapted to come into contact with a weighting means or capable of cooperating with one or more fixing means and (b) a means adapted to cooperate with the foot of a fence or security panel, wherein the said means adapted to cooperate with the said foot comprises (a) a part defining a substantially U-shaped channel having a longitudinal axis, the said channel having a bottom having or associated with an element or face adapted to bear against the said floor or surface and (b) a component attached to the said part, disposed at a distance from the bottom of the channel and extending above the said channel when the element or face bears against a substantially horizontal surface, the said component having at least one opening (12A, 12B) situated above the said bottom of the said channel, the said at least one opening (12A, 12B) being adapted to allow for the passage of part of the foot of a fence or panel, while the said channel is adapted to receive the end of the said foot passing through the said at least one opening (12A, 12B), the said at least one opening (12A, 12B) and the said channel each having a shape adapted to limit at least a pivoting movement of the foot relative to the longitudinal axis of the channel and wherein it is produced at least partially by means of a metal sheet, advantageously a steel sheet, bent so as to form the channel and the component having the said at least one opening (12A, 12B) situated above the channel, characterised in that it is formed by a single bent sheet including the following parts: - a first U-shaped part forming the channel with a bottom extending in a first plane, the flanges (R1, R2) of the said first part each extending in a plane (V1, V2) substantially perpendicular to the said first plane, - a second part forming the component attached to one of the said flanges of the said first part extending in a plane substantially parallel to the said first plane and having the one or more openings (12A, 12B) for receiving the end of the foot of a fence or a panel, - a fourth part forming the bearing means extending in the said first plane and connected to the first part or to the second part by a third part extending in a plane inclined relative to the said first plane, the said fourth part being adapted to come into contact with the weighting means or to be attached to the weighting means, and - advantageously a fifth part rigidly connected to the fourth part and extending in a plane (H10A) inclined relative to the said first plane. - a first U-shaped part forming the channel with a bottom extending in a first plane, the flanges (R1, R2) of the said first part each extending in a plane (V1, V2) substantially perpendicular to the said first plane, - a second part forming the component attached to one of the said flanges of the said first part extending in a plane substantially parallel to the said first plane and having the one or more openings (12A, 12B) for receiving the end of the foot of a fence or a panel, - a fourth part forming the bearing means extending in the said first plane and connected to the first part or to the second part by a third part extending in a plane inclined relative to the said first plane, the said fourth part being adapted to come into contact with the weighting means or to be attached to the weighting means, and - advantageously a fifth part rigidly connected to the fourth part and extending in a plane (H10A) inclined relative to the said first plane.