Looks like Rootes had at least two different Roofracks for the Imp.
Autocar 1965, January 22
Roofrack Safety belts Wing mirrors
Overriders (set of 4) Fog and spot lamps Wheel trims (set of 4)
Anti mist panel Engine compartment rubbing pads (set of 5)
Reversing lamps Mud flaps (set of 2)
The Imp Site Miscelaneous Imp info Imp Library Sales Brochures Imp Tech Imp Bodywork Accessories Rootes Accessories (this file) Rootes Accessories Check list Rootes Accessories Gauges Rootes Accessories mirrors