Abstract: An overhead lighting appliance having a longitudinally extending and horizontally disposed lamp tube (4) housed within a reflector assembly of opposed downwardly diverging side reflectors (6) and cross blades (10) which divide the reflector assembly into cells and determine cut-off angles thus to reduce glare. Each cross blade (10) has an outer region (10a) to prevent ladder flash, which is of reduced or tapering thickness outwardly of a line C being a plane extending from the bottom of the reflector assembly to a tangent to an upper region of the lamp tube (4). The reduced width portion (10a) thus minimises obstruction of light output in the upper outer edge region of the cross blade.