Back support

A back support (20, 20') including; a backrest part (22, 22') for supporting a back of a person; and connection means (30, 30') for connecting the backrest part (22, 22') to a fixed body (10, 60), wherein the connection means (30, 30') permits the backrest part (22, 22') to be moved between stored and deployed conditions, and wherein the connection means (30, 30') permits movement of the backrest part (22, 22') laterally away from the fixed body (10, 60).