Tuhia he tomokanga mo tenei pene - Kua hangaia e Davidson nga tohu poupou mo te Royal Mail o te UK, tae atu ki te 1993 "Sherlock Holmes" huinga, "Te Teihana", i te 2003 "British Pub Signs" huinga, e wha o te 2010 "Business and Consumer Smilers", "Paralympic Games - Equestrian" i te "Olympic Games and Paralympic Games 2012
" huinga, te Mahuru 2018 "Hurihanga Postal: Mail by Bike" huinga me nga tohu Kirihimete o taua tau ano.