All to Know About ITV Secret Service Including Start Time, Cast and ...
A hotly anticipated spy thriller with an all-star cast is ready to make its ITV debut.
ground.newsHere’s the latest on the Secret Service cast.
- The ITV thriller, based on Tom Bradby’s novel, has Gemma Arterton as MI6 officer Kate Henderson leading the cast. Other key players include Rafe Spall, Mark Stanley, Rochenda Sandall, Alex Kingston, Amaka Okafor and Aoife Hinds. This lineup was confirmed in multiple press previews and ITV’s own materials in April 2026.
- Recent coverage highlights the ensemble around Arterton, with Spall as Kate’s husband and political advisor, Stanley as the foreign secretary, and Kingston as Rose Trewen, head of security at SIS. These roles are repeatedly mentioned in TV press roundups during April 2026.
- Release info indicates the series premiered in late April 2026 on ITV with episodes following on consecutive nights, and all five episodes were available on ITVX after release. This is echoed across multiple outlets summarizing the premiere window.
Illustration of the main cast
- Gemma Arterton as Kate Henderson (MI6 officer)
- Rafe Spall as Stuart Henderson (husband and advisor)
- Mark Stanley as Ryan Walker (Foreign Secretary)
- Rochenda Sandall as Melissa Morris (political advisor)
- Aoife Hinds as Julie Price (co-worker on the Russian desk)
- Alex Kingston as Rose Trewen (head of SIS security)
- Amaka Okafor as Imogen Conrad
If you’d like, I can pull a quick side-by-side table of cast names and their described roles from the latest press materials, or summarize critical early reactions.