Publishers
- Brown Wells & Jacobs Ltd. 3
- Brown, Prior, Anderson 1
- Brown, Son & Ferguson Ltd. 8
- Brownsword Books 1
- Broxbourne Press (printers) Limited 1
- Bruce & Gawthorn Limited 3
- Bruce Coleman 1
- Bruce Main-Smith & Co. Ltd. 5
- Bruce Main-Smith Retail Ltd. 1
- Bruno Cassirer 2
- Brunot-Labbe 1
- Bryngold Books 2
- Buchan & Enright 2
- Buchebroc Press 1
- Buckingham Press 1
- Buckinghamshire Record Society 1
- Budding Books 4
- Budget Print & Design 1
- Bulfinch Press 2
- Bullfinch Publications 2
- Bulzoni Editore 1
- Burke 3
- Burke Books 1
- Burke Publishing 1
- Burke Publishing Company Ltd. 7
- Burnett Books 1
- Burns & Oates 4
- Burns Oates And Washbourne Ltd. 4
- Burroughs Wellcome And Col. 1
- Bus Enthusiast Publishing Company 3
- Buschlen Mowatt 1
- Butternut And Blue 1
- Butterworth & Co. (publishers) Ltd 1
- Butterworth Architecture 2
- Butterworth-Heinemann Ltd. 1
- Butterworths 8
- Butterworths Scientific Publications 1
- C. & J. Temple 1
- C. & J. Temple Ltd. 3
- C. Arthur Pearson 1
- C. Arthur Pearson Ltd. 6
- C. Combridge 1
- C. Cooke 3
- C. Davis 1
- C. Hurford And P.G. Lansdown 1
- C. Hurst & Company 1
- C. Potten 1
- C. Stalker 3
- C. Struik 2
- C. Tilt and Simpkin and Co. 3
- C. Titcombe 1
- C.A. Kaemmerer 1
- C.A. Kochs 1
- C.A. Publications Ltd. 14
- C.A. Publications, Ltd. 6
- C.A. Reitzels 1
- C.F. Braun & Co. 1
- C.H. Beck 1
- C.I. Thomas 1
- C.J. Clay & Son 1
- C.J. Hatcher 1
- C.J. Perkins 1
- C.S.S.M. 2
- C.W. Beaumont 2
- C.W. Deacon & Co. 1
- C.W. Faulkner & Co. Ltd. 1
- Cab International 1
- Cadell And Co. 1
- Cadmos 1
- CADW 1
- Caerwent Historic Trust 1
- Calder Walker Associates 1
- Callway 1
- Calypso Publications 1
- Cambrian Archaeological Association 18
- Cambrian Ornithological Society 2
- Cambridge Archaeological Unit 1
- Cambridge Scholars Press Ltd. 1
- Cambridge University Press 173
- Camden Miniature Steam Services 1
- Cameron May 1
- Camps & Tours Union 1
- Canada Department Of Mines 1
- Canadian Centre For Architecture 1
- Canadian National Railways 1
- Canav Books 2
- Candlewick Press 3
- Canimpex 1
- Canine Publications 1
- Canongate 4
- Canongate Books Ltd 1
- Canongate Press 1
- Canongate Publishing Limited 2
- Capall Bann Publishing 1
- Cape Times 1
- Capital Transport 5
- Caradon District Council 1
- Cardiff Council 1
- Cardiff Free Libraries 1
- Cardiff University Of Wales Press 1