Kammala jumla mai zuwa: Addison na farko solo show a Edinburgh Festival Fringe ya kasance a 2003, wanda aka zabi shi a matsayin Mafi kyawun sabon shiga a
Kyautar Perrier. Ya ci gaba da kawo wasan kwaikwayo zuwa Fringe na shekaru da yawa, yana samun sunayen sunayen Perrier Award guda biyu <unk> don wasan kwaikwayon "Civilisation" na 2004 da kuma "Atomicity" na 2005.