The Big Feastival will be a mix of music and food, developed to raise cash for charities The Prince's Trust & Jamie Oliver Foundation.
Get Involved will handle consumer PR activities including press office.
Chefs and restaurants such as Michelin Star recipient Giorgio Locatelli and former Masterchef winner and Wahaca co-founder Thomasina Miers will be on site to deliver food and drink, while music stars such as Soul II Soul and The Charlatans play on the big stage.
Jamie Oliver said: ‘The Big Feastival is something unique that we’ve wanted to try for a while. A really good festival for everyone with great music and great food, all for charity.’