“The Traitors” (the hit reality competition show filmed in Scotland) is shot in relatively short blocks, usually over about 2–3 weeks, and recent UK seasons have been filmed in late spring to summer, for example around April–June 2025 for the series airing on New Year’s Day 2026.

What “Traitors” Are You Asking About?

Most people searching “when was Traitors filmed” are referring to the reality show The Traitors (BBC/Peacock), which is filmed at Ardross Castle in the Scottish Highlands.

If you meant a different production (like the 2013 Moroccan film Traitors or the 1962 British thriller The Traitors), those are completely separate projects with their own production timelines.

General Filming Window

For the UK reality series:

  • Seasons are filmed in a short, continuous production block of roughly 2–3 weeks, covering all the episodes in that run.
  • Public info and casting/application notes indicate filming typically happens between spring and summer, both for logistics and to avoid the worst Scottish weather and midges.

Example: Recent Season

A recent UK season scheduled to air on New Year’s Day 2026 was filmed in summer 2025 at Ardross Castle, after contestants selected in the first half of 2025 “descended on the castle” for production.

This fits the usual pattern: film mid‑year, then air several months later in winter.

If You Meant a Different “Traitors”

  • Traitors (2013 film, Morocco/US) – Filmed in Morocco (e.g., Ketama) prior to its 2014 release; exact day‑by‑day shoot dates are not publicly detailed, but production clearly occurred before its April 2014 US release.
  • The Traitors (1962 British film) – A black‑and‑white spy thriller released in 1962, so its filming was in the early 1960s, prior to that release date.

If you specify which version (UK show, US show, or a particular film), the filming window can be narrowed even further. Information gathered from public forums or data available on the internet and portrayed here.