From the publisher's website:
EDGE was originally founded in London, England in 1979 by Dr. Tim Langdell. At first known as "Softek: Masters of the Game", the company soon became better known by its famous game brands EDGE, THE EDGE and EDGE GAMES. One of the larger game companies in the UK in the 1980s (and one of the very few independent developer/publishers left from that early era), EDGE moved its main headquarters form London to Los Angeles in the early 1990s. During the 90s EDGE broadened its reach into a wider section of the entertainment industry, becoming involved in publishing magazines, comic books, movies, and game hardware.