Abstract: A seat suspension arrangement intended to provide greater protection for occupants of a vehicle seat in the event of a rearward collision in a motor vehicle, comprises a platform element intended to be supported in the frame of the back rest of a vehicle seat in order to provide support for the seat upholstery, the platform element comprising side rails (1) between which are coupled sinuous wire springs (3) and a plurality of link means (6, 300, 301, 302) by means of which the platform element may be suspended in the frame of a vehicle seat. At least some of the link means (300, 301, 302) are designed to collapse under abnormal load such as would occur in a vehicle collision from the rear, to allow the platform element to move relatively to the seat frame and thus to provide protection for the seat occupant against rearward impact.