The Highfield Mole

From Author Wars - https://authorwars.com/publications/the-highfield-mole-639987.html

Overview:

Title: The Highfield Mole
Author: Roderick Gordon, Brian Williams
Year: 2005
ISBN-10: 0954839900
Publisher: Mathew & Son Limited
Price:
Pages: 344
Binding: Trade Paperback
Type: Novel
Title Reference: The Highfield Mole
Notes: First edition. Data from Amazon.com as of 2017-11-11. According to http://tunnelsnovels.wikia.com/wiki/Tunnels , this first, self-published edition had "a limited run of 500 hardback and 2,000 softback copies".