Rex Mayhew

Rex Mayhew is a senior Foreign Office official who sits astride Angela Burr's operation from behind a desk in Whitehall, all careful phrasing and institutional caution. He wants the mission contained, deniable, and above all not embarrassing to his masters. Polished, wary, and never quite trustworthy, he treats intelligence work as a matter of managing appearances rather than danger.

Douglas Hodge plays him with the specific menace of competence rather than villainy — a man whose smoothness is the threat. The writing never lets you be sure whose side he's really serving, and Hodge keeps that ambiguity alive through sheer vocal control, making bureaucratic caution feel as dangerous as anything happening in Roper's world.