Auxiliary pushchair seat

An auxiliary seat attachable to a pushchair having a fixed frame, to enable the pushchair to accommodate two children seated side-by-side, the auxiliary seat comprising a frame having a backrest and a base and a wheel in contact with the ground in an erect operative position to support a child seated on the base with their back against the backrest, wherein the frame of the auxiliary seat is configured so that the backrest and the base fold substantially flat when the auxiliary seat is not in use and wherein the auxiliary seat, including the base and backrest, can pivot relative to the pushchair to be folded against the side thereof in a collapsed storage position with the wheel off the ground, once the base and backrest of the auxiliary seat have been folded substantially flat, the auxiliary seat further comprising an attachment mechanism which connects the auxiliary seat to the pushchair and which is configured to allow the position of the frame of the auxiliary seat to be adjusted forwards and backwards relative to the fixed frame of the pushchair and to be independently adjusted forwards and backwards relative to the attachment mechanism.