Roderick Gordon self-published The Highfield Mole in 2005, which caught the eye of Barry Cunningham of Chicken House, a publisher of children’s books. It was subsequently re-released as Tunnels in July 2007 and, after media interest around its launch, was published in almost forty countries and became a New York Times Bestseller. Tunnels was followed by five sequels which have achieved overall sales of some two million copies worldwide. Roderick's most recent book, Summerhouse Land, was published in 2016.