A device to support the back and/or head of a wheelchair user in a vehicle, the device comprising the steps of: a support arrangement； and a back/headrest which presents a substantially planar support surface, the back/headrest being moveable with respect to the support arrangement between a stowed position, in which the back/headrest is relatively close to the support arrangement, and a deployed position, in which the back/headrest is supported at a second, greater distance from the support arrangement, wherein when the back/headrest is in the stowed position the support surface lies in a first plane, and when the back/headrest moves to the deployed position, the support surface thereof is in the first plane, or in a further plane which is substantially parallel with the first plane.
