A kit for assembly into universal multipoint locking assembly having: a faceplate sized to be received into a door groove; a gear box: one or more bolts to be driven by the operation of the gear box to engage a striking plate; a drive rail adapted to act between the gear box and each of said bolts spaced from the gear box to displace the bolts between a locking condition and an unlocking condition; said faceplate formed with a range of vertically spaced portions (12C, 12G, 12H); some portions containing apertures to accommodate the operation of each bolt and to receive mounting screws and some portions containing only mounting screw holes; characterized in that the drive rail comprises two similar drive rail struts (34A, 34B) and at least one spacer (36, 37) member arranged to join each drive rail strut (34A, 34B) in a parallel spaced relation to provide a slot extending over substantially the whole length of the drive rail, each drive rail strut (34A, 34B) bearing a plurality of equally spaced engaging features distributed over at least a length of the strut where any bolt can be installed, said engaging features being adapted to engage with corresponding drive engaging features provided on the bolt so that the bolt can be located at any one of a range of positions along the height of the rail; the portions of said faceplate being defined by weakened separation portions to facilitate cutting or snapping the faceplate into separated portions whereby the multipoint lock can be assembled into a door groove with each of the gear box and bolts accommodated in the provided door recesses and in operable correspondence with a striking plate. a faceplate sized to be received into a door groove; a gear box: one or more bolts to be driven by the operation of the gear box to engage a striking plate; a drive rail adapted to act between the gear box and each of said bolts spaced from the gear box to displace the bolts between a locking condition and an unlocking condition; said faceplate formed with a range of vertically spaced portions (12C, 12G, 12H); some portions containing apertures to accommodate the operation of each bolt and to receive mounting screws and some portions containing only mounting screw holes; characterized in that the drive rail comprises two similar drive rail struts (34A, 34B) and at least one spacer (36, 37) member arranged to join each drive rail strut (34A, 34B) in a parallel spaced relation to provide a slot extending over substantially the whole length of the drive rail, each drive rail strut (34A, 34B) bearing a plurality of equally spaced engaging features distributed over at least a length of the strut where any bolt can be installed, said engaging features being adapted to engage with corresponding drive engaging features provided on the bolt so that the bolt can be located at any one of a range of positions along the height of the rail; the portions of said faceplate being defined by weakened separation portions to facilitate cutting or snapping the faceplate into separated portions whereby the multipoint lock can be assembled into a door groove with each of the gear box and bolts accommodated in the provided door recesses and in operable correspondence with a striking plate. one or more bolts to be driven by the operation of the gear box to engage a striking plate; a drive rail adapted to act between the gear box and each of said bolts spaced from the gear box to displace the bolts between a locking condition and an unlocking condition; said faceplate formed with a range of vertically spaced portions (12C, 12G, 12H); some portions containing apertures to accommodate the operation of each bolt and to receive mounting screws and some portions containing only mounting screw holes; characterized in that the drive rail comprises two similar drive rail struts (34A, 34B) and at least one spacer (36, 37) member arranged to join each drive rail strut (34A, 34B) in a parallel spaced relation to provide a slot extending over substantially the whole length of the drive rail, each drive rail strut (34A, 34B) bearing a plurality of equally spaced engaging features distributed over at least a length of the strut where any bolt can be installed, said engaging features being adapted to engage with corresponding drive engaging features provided on the bolt so that the bolt can be located at any one of a range of positions along the height of the rail; the portions of said faceplate being defined by weakened separation portions to facilitate cutting or snapping the faceplate into separated portions whereby the multipoint lock can be assembled into a door groove with each of the gear box and bolts accommodated in the provided door recesses and in operable correspondence with a striking plate.