Cornichon shortage leaves British sandwich shops in a pickle

Shortage of pickled mini-cucumbers has caused Pret a Manger to pull its jambon beurre from the shelves

With their sharp flavour and crunch, pickled cucumbers are an essential component of any sandwich worth its salt.

But an unexpected shortage of cornichons has caused consternation in sandwich shops across the country as cafes scramble to get their hands on jars of the small green pickles.