The reality show for people who can’t stand them takes the rookies and teaches them to become WW2 assassins in Secret Agent Selection this week.

From ‘gutter fighting’ techniques, including eye-gouging and testicle-crushing, to the ‘double tap’ method of shooting, it’s utterly fascinating stuff.

And it’s made more urgent by the use of 1940s footage showing actual Special Ops Executive recruits being put through the same paces.