Davidson iddisinja timbri postali għar-Royal Mail tar-Renju Unit, inkluż is-sett "Sherlock Holmes" tal-1993, "The Station", fis-sett "British Pub Signs" tal-2003, erba'minn "Business and Consumer Smilers" tal-2010, "Logħob Paralimpiku - Equestrian" fil-"Logħob Olimpiku u Logħob Paralimpiku 2012"
" set, is-sett ta' Settembru 2018 "Wirt Postali: Mail by Bike" u t-timbri tal-Milied tal-istess sena.