Line joins from The Prince's Foundation, the educational charity set up by the Prince of Wales, where he was been the chief executive for the last two years.
Duncan Edwards, managing director of NatMags, said: "As I have said in the past, we are currently working on a number of new magazine concepts and Matthew is the perfect person to head up the development team on one of our most promising ideas. Matthew is a great talent and has an uncanny knack of knowing what is right in a visual sense for today's consumer."
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