Cover and method of manufacture thereof

A cover comprising a load bearing panel of generally square or rectangular form and having an upper surface and an underside surface, at least some of the edges of load bearing panel being provided with ramp members which are secured along their length to the load bearing panel, the ramp members each defining an upper ramped surface and a lower, ground engaging surface, wherein the ground engaging surface is spaced beneath the underside surface of the load bearing panel, and wherein the load bearing panel comprises at least one of a projecting flange or recess, the at least one projecting flange or recess provided with interlocking features comprising one or more openings through which material of the ramp members may pass or extend during an overmoulding thereof, thereby allowing material of the ramp members to extend through the one or more openings to secure the ramp members along their length to the load bearing panel.