The chain has been warned that it faces losing ground to competitors if it doesn't join other major outlets in adding more plant-based options to its offerings
The Italian-style chain has added a number of new vegan dishes to its menu recently - including the high streets first plant-based four cheese pizza
The Quattro No-Maggio is part of the chain's special two-for-one offer on all vegan mains throughout the month, in celebration of Veganuary
The campaign marks the rising popularity of veganism in the UK according to Italian restaurant chain Zizzi, which created it
The supermarket has hugely expanded its own-brand offering of vegan products - as well as stocking multiple items from other manufacturers
The eatery is also offering a 2 for 1 on all vegan main meals this month
The retailer wants to offer customers more 'innovative casual dining options'