Tesco is to launch a ready-made version of a student staple: the fish finger sandwich.

The £2 sandwich goes on sale in Tesco stores nationwide today and comprises fish fingers, lettuce and ketchup. The product is designed to eaten cold.

"The inspiration for the sandwich came from my own student days – it really was survival food back then,” Tesco product developer Laura Fagan told the Sunday Mirror.

"I realised that every now and then I was getting a hankering for one - and guessed I wasn't alone. Nothing makes us feel better in difficult times than comfort food. We're thinking of developing other classic sandwiches - we'll see how well this one does."

Earlier this year Marks & Spencer unveiled a 75p jam sandwich – only to withdraw the product within six months.