Follow a dysfunctional team of MI5 agents—and their obnoxious boss, the notorious Jackson Lamb—as they navigate the espionage world's smoke and mirrors to defend England from sinister forces.
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The peak run. Top 40% of seasons by average rating — consecutive, with an average of 8.40.
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Gary Oldman
Jackson Lamb
Jack Lowden
River Cartwright
Kristin Scott Thomas
Diana Taverner
Saskia Reeves
Catherine Standish
Christopher Chung
Roddy Ho
Aimee-Ffion Edwards
Shirley Dander
All 30 episodes plotted by IMDb rating
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6 episodes • 2022Avg: 7.9
| # | Episode | Air Date | Rating |
|---|---|---|---|
| 1 | Failure's Contagious | Apr 1, 2022 | 7.5 |
| 2 | Work Drinks | Apr 1, 2022 | 7.7 |
| 3 | Bad Tradecraft | Apr 8, 2022 | 8.1 |
| 4 | Visiting Hours | Apr 15, 2022 | 7.9 |
| 5 | Fiasco | Apr 22, 2022 | 8.2 |
| 6 | Follies | Apr 29, 2022 | 8.2 |
6 episodes • 2022Avg: 8.2
| # | Episode | Air Date | Rating |
|---|---|---|---|
| 1 | Last Stop | Dec 2, 2022 | 7.9 |
| 2 | From Upshott with Love | Dec 2, 2022 | 7.8 |
| 3 | Drinking Games | Dec 9, 2022 | 8.2 |
| 4 | Cicada | Dec 16, 2022 | 8.2 |
| 5 | Boardroom Politics | Dec 23, 2022 | 8.6 |
| 6 | Old Scores | Dec 30, 2022 | 8.6 |
6 episodes • 2023Avg: 8.5Golden Era
| # | Episode | Air Date | Rating |
|---|---|---|---|
| 1 | Strange Games | Nov 29, 2023 | 8.2 |
| 2 | Hard Lessons | Nov 29, 2023 | 8.3 |
| 3 | Negotiating with Tigers | Dec 6, 2023 | 8.6 |
| 4 | Uninvited Guests | Dec 13, 2023 | 8.3 |
| 5 | Cleaning Up | Dec 20, 2023 | 8.7 |
| 6 | Footprints | Dec 27, 2023 | 8.6 |
6 episodes • 2024Avg: 8.4Golden Era
| # | Episode | Air Date | Rating |
|---|---|---|---|
| 1 | Identity Theft | Sep 4, 2024 | 8.4 |
| 2 | A Stranger Comes to Town | Sep 11, 2024 | 8.1 |
| 3 | Penny for Your Thoughts | Sep 18, 2024 | 8.1 |
| 4 | Returns | Sep 25, 2024 | 8.1 |
| 5 | Grave Danger | Oct 2, 2024 | 8.6 |
| 6 | Hello Goodbye | Oct 9, 2024 | 8.8 |
6 episodes • 2025Avg: 8.1
| # | Episode | Air Date | Rating |
|---|---|---|---|
| 1 | Bad Dates | Sep 24, 2025 | 7.7 |
| 2 | Incommunicado | Oct 1, 2025 | 7.9 |
| 3 | Tall Tales | Oct 8, 2025 | 8.1 |
| 4 | Missiles | Oct 15, 2025 | 8.2 |
| 5 | Circus | Oct 22, 2025 | 8.4 |
| 6 | Scars | Oct 29, 2025 | 8.5 |
