EVERY last poster, mug and T-shirt bearing the ‘Keep Calm and Carry On’ slogan has been destroyed in frustrated rage, it has emerged.

The wartime poster, which amused Britons during less turbulent times, has over the last week transformed into a taunting reminder of past complacency.

42-year-old Nathan Muir said: “Keep calm? Keep fucking calm?

“It’s no wonder they never used this bastard at the time. The last thing people in 1939 needed were forehead lacerations from headbutting a glass frame, like I got last night.

“I’ll carry on, given the lack of other options, but you can forget about keeping calm. ‘Keep your boiling rage from overflowing more than twice a day’, maybe. Maybe.”

The manufacturers of the original ‘Keep Calm’ poster have confirmed that, in the face of the backlash, they are to reproduce ‘Slaughter Every Last Nazi’, a morale-boosting poster originally printed in 1943.