| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| An Insider's Guide to 150 Spy Sites in London | 978-0-9564530-0-6 (0-9564530-0-7) | 2010 | Mark I Birdsall |
| Classified: The Insider's Guide to 500 Spy Sites in London: Plus 250 Associated London Intelligence Sites | 978-0-9564530-1-3 (0-9564530-1-5) | 2015 | Mark Birdsall |