Scott Neilson was a detective chief inspector (DCI). (AUDIO: The Sinestran Kill)
In 2020, Treadwell was a DCI. (AUDIO: Wild Animals)
Patricia Menzies was promoted from Detective Inspector to Detective chief inspector. (AUDIO: The Condemned [+]Eddie Robson, Main Range (Big Finish Productions, 2008).)
Jack Hayes was a Detective chief inspector and was part of the London Metropolitan Police Service. (COMIC: Bloodsport [+]Mark Wright, DWM Comics (Panini Comics, 2016).)
Patrick Mullen was a chief inspector. (PROSE: Illegal Alien [+]Mike Tucker and Robert Perry, adapted from Illegal Alien, BBC Past Doctor Adventures (BBC Books, 1997).)