Rampungake ukara ing ngisor iki: Davidson wis ngrancang perangko pos kanggo Royal Mail Inggris, kalebu set "Sherlock Holmes" taun 1993, "The Station", ing set "British Pub Signs" taun 2003, papat "Business and Consumer Smilers" taun 2010, "Paralympic Games - Equestrian" ing "Olympyc Games and
Paralympic Games 2012 "set, September 2018" Warisan Pos: Mail dening Bike "set lan prangko Natal taun sing padha.