Disclosed is a powered mobility apparatus 1 comprising: a base 2 a plurality of wheels 5 rotatably mounted to the base a chair 3 movably mounted to the base an omnidirectional drive means connected to the wheels and a motorised actuation means (65, figure 2) connected to the base and the chair. In use, the drive means is operable to move the apparatus transversely, and the actuation means is operable to adjust the height of the chair relative the base. The apparatus may also comprise a further motorised actuation means 4, operable to move the chair between deployed and folded / collapsed positions. The apparatus may further comprise a control means 9 connected to the further actuation means. The chair may be pivotally mounted to the base. The further motorised actuation means may comprise a tilt actuator, which may be connected to an automatic control means and one or more sensors. The automatic control means may respond to measurements from the sensors, and work to maintain the chair in a substantially upright orientation when the apparatus is operating on a sloped or inclined surface. The drive means may comprise a drive control means, and a swivel mechanism with a motor.