An aircraft seat comprising: • a seat having: • a squab and a backrest, both being movable and • a seat chassis, via which the seat can be fixed to a floor, • a mechanism for moving the squab and the backrest, the mechanism having: • a linear runner mounted on the seat chassis, • a seat frame sub-frame bearingly mounted on the linear runner, • the squab being pivotally on the sub-frame substantially at its front edge and • the backrest being pivotally mounted on the squab substantially at the back edge of the squab and the bottom of the backrest, • linear drive means for extending (and retracting) the sub-frame on the runner with respect to the seat chassis between a retracted, TTL position and an extended position, • a first cam track in a first cam track member fast with the seat chassis for adjusting the height of the back edge of the seat squab, a first cam follower mechanism interconnecting back edge of the seat squab, the first cam track and the linear drive means, for linear drive of the sub-frame with height adjustment of the rear edge of the seat squab, • a second cam track fast with the seat chassis for adjusting the inclination of the backrest and • a second follower connected to the backrest and engaged with the second cam track, characterised in that the first cam track comprises: - a substantially upright, though arcuately curved, rear portion; - a forwards extending portion, substantially parallel with the linear runner; wherein the arrangement of the rearmost substantially vertical portion is such that whilst the first cam follower mechanism is co-operating with the rearmost substantially vertical portion of the first cam track, an effect of the linear drive means is lowering or raising of the rear of the seat squab with respect to the front of the seat squab. • a seat having: • a squab and a backrest, both being movable and • a seat chassis, via which the seat can be fixed to a floor, • a squab and a backrest, both being movable and • a seat chassis, via which the seat can be fixed to a floor, • a mechanism for moving the squab and the backrest, the mechanism having: • a linear runner mounted on the seat chassis, • a seat frame sub-frame bearingly mounted on the linear runner, • the squab being pivotally on the sub-frame substantially at its front edge and • the backrest being pivotally mounted on the squab substantially at the back edge of the squab and the bottom of the backrest, • linear drive means for extending (and retracting) the sub-frame on the runner with respect to the seat chassis between a retracted, TTL position and an extended position, • a first cam track in a first cam track member fast with the seat chassis for adjusting the height of the back edge of the seat squab, a first cam follower mechanism interconnecting back edge of the seat squab, the first cam track and the linear drive means, for linear drive of the sub-frame with height adjustment of the rear edge of the seat squab, • a second cam track fast with the seat chassis for adjusting the inclination of the backrest and • a second follower connected to the backrest and engaged with the second cam track, characterised in that the first cam track comprises: - a substantially upright, though arcuately curved, rear portion; - a forwards extending portion, substantially parallel with the linear runner; • a linear runner mounted on the seat chassis, • a seat frame sub-frame bearingly mounted on the linear runner, • the squab being pivotally on the sub-frame substantially at its front edge and • the backrest being pivotally mounted on the squab substantially at the back edge of the squab and the bottom of the backrest, • the squab being pivotally on the sub-frame substantially at its front edge and • the backrest being pivotally mounted on the squab substantially at the back edge of the squab and the bottom of the backrest, • linear drive means for extending (and retracting) the sub-frame on the runner with respect to the seat chassis between a retracted, TTL position and an extended position, • a first cam track in a first cam track member fast with the seat chassis for adjusting the height of the back edge of the seat squab, a first cam follower mechanism interconnecting back edge of the seat squab, the first cam track and the linear drive means, for linear drive of the sub-frame with height adjustment of the rear edge of the seat squab, • a second cam track fast with the seat chassis for adjusting the inclination of the backrest and • a second follower connected to the backrest and engaged with the second cam track, - a substantially upright, though arcuately curved, rear portion; - a forwards extending portion, substantially parallel with the linear runner;