Imperial's Heirloom sets were Cameron Highlanders in the Sudan. They are quite nice. As some other folks had mentioned, Figarti has done two sets of Camerons in the desert (4 advancing and 2 wounded as an add on set), and Ducal has done their pipes and drums.
As far as I recall, K&C never did Cameron Highlanders as regular production figures (Gordon might have done some repaints of Seaforths or Blackwatch figures into Camerons, but I never came across any). To my recollection, K&C did Glossy Seaforths, Glossy Highland Light Infantry, Black Watch in both Glossy and Matt, Gordons in glossy (Napoleonic) and matt, and 92nd (later Sutherland) Highlanders from the Crimea.