Abstract: A forward facing child safety seat has a seat body, and a base portion adapted to rest on a motor vehicle seat and to be secured in position on the vehicle seat by means of an adult lap belt which passes between the seated occupant of the child seat and the adult seat-back. The base portion has a rear projection adapted to extend towards the vehicle seat-back above the level of the vehicle seat and two side projections extending upwardly and rearwardly from the sides of the base portion so as to define respective slots with the side edges of the rearwardly projecting portion, each side projection having an upper surface above the level of the rear projection.