The pair are the latest actors to join the BBC Studios and Narrativia-produced series, joining lead Richard Dormer.
Chancellor stars as Lord Vetinari, The Patrician of Ankh-Morpork, and architect of the city’s normalized wrongness and ramshackle system of governance, while Fleet stars as The Archchancellor, wizard, magical advisor, and the Head of the Unseen University.
Set in the fictional city of Ankh-Morpork, where crime has been legalized, The Watch is a “punk rock” drama. The eight-part series centers on a group of misfit cops as they rise up from decades of helplessness to save their corrupt city from catastrophe.
Elsewhere, Ingrid Oliver (Doctor Who) stars as the Head of The Assassins’ Guild, Doctor Cruces. Ruth Madeley (The Rook) stars as the wiry Throat,