Offshore Motorcycle Parts  
   Offers clear, dark and iridium tinted visors. Includes Harley Davidson genuine parts catalogue request.
   http://www.offshoremotorcycleparts.com/

Riders Offshore  
   Guernsey based supplier of helmet visors including black, iridium, & mirror finishes to fit most popular makes of helmet.
   http://www.visorsworldwide.com

Race Visors  
   Offers a varied range of motorcycle helmet visors to fit popular brands of helmets, as well as a more limited range of helmets.
   http://www.racevisors.co.uk/

The Visor Shop  
   Extensive range including clear, light-tint, dark-tint, iridium mirrored plain colours & rainbow iridium. Also sells helmets.
   http://www.thevisorshop.com