“All I know is that there’s somebody in my house, eating my birthday cake, with my family, and it’s not me!” So quoth Adam Gibson (Arnold Schwarzenegger) in sci-fi thriller The Sixth Day, raging as his evil clone enjoyed a family tea in his place.

Last weekend’s Cake International show provided the only thing that could make the scene even scarier for Arnie - a lookalike cake. The Terminator treat is quite a feat of engineering: it can’t be reasoned with, it can’t be bargained with, but it is delicious.