These two new additions mean the PPA's increasingly diverse network now incorporates nearly 250 companies across consumer magazine, business, and digital media, says the PPA. This already includes a number of specialist content agencies, among them Redwood, River, White Light Media, Axon, and Think.
Seven is responsible for Sainsbury's Magazine; Weight Watchers magazine – as well as other digital content for the weight management and health brand; and multi-platform work across a client base that includes CIMA, Fujitsu, and Grant Thornton.
John Brown Media works on content marketing strategies for a range of blue-chip clients, and produces a portfolio of customer magazines including John Lewis Edition, Waitrose Food and My VIP for Pets at Home.
Barry McIlheney, CEO of the PPA, said: "I am absolutely delighted to welcome Seven and John Brown back to the PPA. They represent a community with professional content creation at its core, and it is increasingly the PPA's role to provide support, representation, and a platform for successful businesses like theirs to come together in this world of constant change. With our membership continuing to broaden and grow, this is a fantastic start to 2016 for us and one we are very excited about building on as we move into the year ahead."
Sean King, CEO of Seven, said: "I am delighted to rejoin the PPA, and I look forward to being part of a collective within the association that fits with our own focus on reaching audiences through premium quality content."
Andrew Hirsch, CEO of John Brown Media, said: "As a business, we are dedicated to the creation of compelling content across platforms. I look forward to working alongside our peers in this sector under the broader PPA umbrella."