Ray of Light Letters have worked with the Tour de Yorkshire Ray of Light Letters have worked with the University of Hull Ray of Light Letters have worked with Swift Caravans Ray of Light Letters have worked with The National Railway Museum, York Ray of Light Letters have worked with The National Lottery Ray of Light Letters have worked with Mercy Ships Ray of Light Letters have worked with Lincolnshire Life Magazine Ray of Light Letters have worked with Kuda Club, York Ray of Light Letters have worked with EDF Energy