A seat for a vehicle is disclosed with a support for attachment to an aspect of a vehicle and a platform block which may be securely attached to the support. A seat element for accommodating an occupant is provided together with a suspension system connecting the seat element to the platform block. The suspension system includes a resilient member having an equilibrium condition to which the resilient member is biased to return if it extends beyond, retracts below or otherwise varies away from the equilibrium condition.