High street giant forced to lock cheap food item in plastic boxes as cases of shoplifting soar

TESCO is beefing up security — by locking up tins of Spam.

The supermarket chain put the throwback treat in anti-theft boxes at one London shop earlier this week.

Spam’s price rise has forced Tesco to take measures to protect it from shopliftersPaul Edwards GettyTesco said security protection on products was introduced wherever necessary[/caption]

The tagged cases can be disarmed only by staff when buyers reach the checkout.

It came as the meaty wartime favourite’s...