Vehicle seat

A seat for a vehicle is provided. The seat is configured such that an occupant can be seated in either a lower position or in an upper position. The seat comprises a base member for accommodating an occupant in the lower position and a seat back, positioned to extend generally upwards from the region of the base member. The seat back is configured to accommodate an occupant's back. A selectively deployable perch member is also provided. The seat member has two deployment conditions. In a first condition, the perch member is configured as an extension of the seat back for when the occupant is seated in the lower position. In a second condition, the perch member is configured as an additional base member for supporting an occupant in the upper position. A fastening is provided for securing the perch member when it is in the second condition.