Nando's has announced a super-size competition that's sure to be a hit with diners. The PERi-PERi restaurant will be launching a series of huge billboards featuring huge loyalty cards, which food fans can literally tear down, and haul to their nearest Nando's. The loyalty cards are a colossal 3x2m in size and say to 'grab nine mates and get ready to nab our giant Nando's card'. Don't hang about as t his could be your chance to dine like kings, for nothing at all. Nando’s fans in London and Manchester should look out for billboards in Bethnal Green and Manchester Printworks between 29th-31st March. The billboard will also be up in London's White City, between 4th-6th April, during the hours of 11.30am-7pm on Friday and Saturday, and 12pm-7pm on Sunday. If you aren't close to Manchester or London, then don't fear, there's still a chance to claim a free meal - other locations will be revealed on Nandos social media. The news also comes as Nando’s reveals there are currently 1.8 million rewards sitting unclaimed on Nando’s Cards. That's the equivalent of over £13 million worth of PERi-PERi chicken.