A child safety seat is disclosed which is incorporated into the squab (2) of a vehicle seat (1) in which part of the squab (2) can be moved to an elevated position. The child safety seat incorporates at least one latch (16) to maintain two components of the seat in a predetermined relative position. One of those components carries the latch (16) and the other component carries a latch pin (15) configured to co-operate with the latch (16). The latch (16) defines a channel between two side walls (43,44), the side walls being provided with recesses (45,46). The channel contains a pivotally-mounted latch element (56) which defines a recess. The latch element (56) is movable pivotally between a first position in which the recess therein defines a mount accessible, by the latch pins (15), to enable the latch pins (15) to be inserted into the recess in the latch element (56) whilst being movable to a retaining position in which the latch pin (15), still retained in the recess in the latch element (56), is retained in the recesses (45,46) formed in the side walls (43,44) of the channel. A releasable mechanism is provided to retain the latch element (56) in its retaining position.