The contract, which was won following a competitive pitch, is to promote the new 'Inspired by Linda’ campaign, which encourages consumers to try the products whether they are vegetarian or not. It begins this month.
The brand, founded by Sir Paul McCartney's ex-wife who died in 1998, has been part of Leeds-based food company Hain Daniels Group since 2011.
Tessa Willmott, managing director of Wild Card, said: "Eating vegetarian is the norm with so many new-world ingredients and food trends that are meat-free. With ‘Inspired by Linda’ we have developed a campaign reaching both vegetarians and the millions of consumers who seek to eat less meat as part of a healthy lifestyle choice."
Emma Sykes, head of comms at Hain Daniels Group, said working with Wild Card was "a natural fit as it is the food and drink PR agency of choice".