Hilda Pierce vs. Millie Bagshot

For fans of Foyle's War, it is rather disconcerting to watch Ellie Haddington (1955) appear as MI5-agent Millie Bagshot in Endeavour (Season 5, Episode 5). You will undoubtedly have images of Hilda Pierce from Foyle's War flashing through your brain. Officially, of course, they are unrelated characters living in different fictional universes. Yet the similarities are so striking that it is tempting to imagine Millie Bagshot as the next chapter in Hilda Pierce's life, as though both series shared the same continuity. Maybe these are just aliases of the same woman.

Even the timeline fits surprisingly well. When Foyle's War ends, Hilda Pierce is a senior MI5 officer in the late 1940s, having survived the Second World War after years directing Special Operations Executive (SOE) missions into occupied France. She is experienced, and deeply aware that the end of one war simply marks the beginning of another. Remember, at the time, Britain was entering the Cold War.

Endeavour
Fast-forward two decades to Endeavour, set in 1968. Millie Bagshot is now a grey-haired veteran intelligence officer operating at the height of Cold War tensions. She oversees agents, protects sensitive operations, and understands the Soviet threat better than almost anyone around her. Rather than feeling like a new character, she seems to have picked up exactly where Hilda Pierce left off, though see seems a bit more 'hands-on' in 'Endeavour'.

Hilda Pierce vs. Millie Bagshot
The personality is virtually identical. Neither wastes words. Neither seeks recognition. They reveal information only when operationally necessary and instinctively place national security above personal sentiment. Years of handling classified operations have taught them that secrets save lives, even when those secrets carry a heavy moral burden.

Even the relationships with the detective protagonists are curiously alike. In Foyle's War, Hilda Pierce becomes the intelligence world's guide for DCS Christopher Foyle, played by Michael Kitchen. She recognises his integrity but never fully opens the door to MI5, allowing him to see only what he needs to know. Two decades later, Millie Bagshot treats Detective Sergeant Endeavour Morse, portrayed by Shaun Evans, in almost the same way. Morse, like Foyle before him, is an outsider entering a shadowy world where ordinary police procedures no longer apply.

Their modus operandi is also consistent. Both women remain calm under pressure, comfortable making difficult decisions, and willing to manipulate events when necessary to protect the greater good. Both characters understand that intelligence work is built upon compromise.

Perhaps the strongest argument for seeing them as the same woman is Ellie's Haddington's performance. She does not simply play two capable intelligence officers; she gives them the same quiet authority, measured speech, penetrating gaze, and understated confidence. Watching Millie Bagshot often feels less like meeting someone new than reconnecting with an old acquaintance whose responsibilities have grown with the changing times.

Sam Stewart vs. Endeavour Morse
While Samantha Stewart, played by Honeysuckle Weeks, does not make an appearance in Endeavour it is easy to imagine her at the periphery of that episode. Or we could envision her playing Sam Stewart in the (once) proposed sequel 'Stewart's Peace'.

Meanwhile, Hilda Pierce, now operating as Millie Bagshot, continues to handle Britain’s most sensitive operations. The name change could plausibly be explained as standard tradecraft: an experienced intelligence officer adopting a new identity after decades in the shadows.

Of course, none of this is official canon. Hilda Pierce and Millie Bagshot belong to separate series with separate histories. Yet the similarities are so striking that they blur the line between those two worlds.