- CBD Research
 - Independent publisher of reference books and CD-ROMS. Also home of Chancery House Press. - Fredrick Warne and Co. Ltd.
- Contains brief history and list of the Observor Books Series as well as editions wanted by members of The Observer Pocket Series Collectors Society.
- Helicon Publishing Ltd
- Innovative reference publishing company and pioneer of electronic and multimedia products.
- Bowker-Saur
- Bowker-Saur
- Professional and reference publisher and provider of navigational and access tools across a range of media.
- Directory Publishers
- Kelly's
- Business directory with details on industrial and commercial companies within the U.K.
- Standbrook Guides
- Publishers of residents' handbooks for towns in the South West of England and South Wales. Guides include local information, town maps, and related items.
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