There only seem to be 6 places in the world that have "The Luddingtons" in their collections.http://www.worldcat.org/title/luddingtons-a-novel/oclc/85187...
One is in Tulsa, Oklahoma, USA; one is in Zurich, Switzerland.
The others are:
National Library of Scotland
The British Library, British National Bibliography
The British Library, St. Pancras
University of Cambridge