Abstract: An adjustment mechanism for a seat, the adjustment mechanism permitting the seat to be adjusted along a motion path that provides adjustment of height and/or back inclination of the seat, the mechanism comprising: a base part; a side part for attaching to the seat; a forward link mounted between the base part and the side part such that the forward link can rotate with respect to both the base part and the side part; a rear link mounted to the base part at a first position, the rear link mounted between the base part and the side part such that the rear link can rotate with respect to both the base part and the side part; an adjustment link attached to the rear link at a second position such that the adjustment link and rear link move in unison; and an adjustable strut mounted between the side part and the adjustment link such that the adjustable strut can rotate with respect to both the side part and the adjustment link, the adjustable strut being mounted to the adjustment link at a third position remote fro