Café chain Pret a Manger has said that strong demand for its vegetarian options helped sales to rise 13.9% last year to £676 million in 2015, with like-for-like sales up 7.5%. The chain, which recently launched a “not just for veggies” campaign, saw double digit growth in UK sales of vegetarian products last year, with avocado the fastest-growing ingredient.

Pret will also sell two new veggie chef’s specials each month throughout the summer and invite customers to tell them if the chefs have “hit the spot or lost the plot” with the new recipes.

As such, Pret has expanded its meat free options to celebrate the campaign, with products such as the Chana Chaat Flat Bread, a vegan Red Tapenade & Avo SuperBowl salad and a Mushroom & Avocado Sushi Salad. Clive Schlee, chief executive of Pret A Manger, said: "Last year thousands told us they were trying to eat less meat. This year we have challenged ourselves to increase our vegetarian options in all shops, as well as opening a veggie-only pop-up shop to learn more from our customers."