Publishers
- Bountyhunter Publications 2
- Boxtree 1
- Boxtree Limited 1
- BPC Publishers Ltd. 1
- Bracken Books 10
- Bradbury & Evans 4
- Bradbury Press 3
- Bradbury, Agnew & Co. 1
- Bradbury, Agnew & Co. Ltd. 5
- Bradford Barton 2
- Bradley Publications Of Hull 1
- Brain & Payne 1
- Bramley Books 4
- Brassey's 14
- Brassey's Defence Publishers 2
- Braun & Schneider 1
- Breachurst Limited 1
- Brecknock Museum 1
- Breedon Books Publishing Co. 7
- Brehmer & Minuth 1
- Brent Press Ltd 2
- Brentano's 2
- Brentano's Ltd 1
- Brevet Press 1
- Brewin Books 3
- Brian Bridgeman 1
- Brian Trodd 2
- Bridge Books 3
- Brimax Books 4
- Bristol and Gloucestershire Archaeological Society 12
- Bristol Branch Of The Historical Association 1
- Bristol City Council 1
- Bristol Record Society 2
- British & Foreign Bible Society, The 1
- British Association for the Advancement of Science 1
- British Aviation Publications Ltd 1
- British Aviation Research Group 1
- British Books Ltd. 1
- British Broadcasting Corporation 4
- British Bryological Society 1
- British Bus Publishing 2
- British Gas Council 1
- British Geological Survey 1
- British Leyland 3
- British Museum 5
- British Museum (Natural History) 1
- British Museum Publications 2
- British Ornithologists' union 25
- British Steel Corporation 1
- British Transport Commission 2
- British Trust for Ornithology 23
- British Waterways Board 1
- Broads 1
- Brockhampton Press 104
- Brockhampton Press Ltd. 39
- Brooke Bond 1
- Brooke Bond Oxo 1
- Brooklands Books 14
- Brooks Cole 2
- Brookside Publishing 1
- Browcom Group Plc. 1
- Brown & Bibby 1
- Brown & Co. 1
- Brown and Brown 1
- Brown Brothers Limited 2
- Brown Watson 3
- Brown Watson Ltd 1
- Brown Wells & Jacobs Ltd. 3
- Brown, Son & Ferguson Ltd. 9
- Brown, Taggard & Chase 1
- Browne and Nolan Ltd. 1
- Brownsword Books 1
- Broxbourne Press (printers) Limited 1
- Bruce & Gawthorn Limited 1
- Bruce Coleman 1
- Bruce Main-Smith & Co. Ltd. 9
- Bruno Cassirer 2
- Brunot-Labbe 1
- Bryngold Books 1
- Bsp Professional Books 1
- Buchebroc Press 1
- Buckingham Press 1
- Budding Books 1
- Budget Print & Design 1
- Bulfinch Press 1
- Bullfinch Publications 2
- Bunny And Gold 1
- Burke 4
- Burke Books 1
- Burke Publishing 1
- Burke Publishing Company Ltd. 5
- Burlington Publishing Company Limited 1
- Burnett Books 1
- Burns & Oates 5
- Burns Oates And Washbourne Ltd. 2
- Burroughs Wellcome And Col. 1
- Bus Enthusiast Publishing Company 2
- Buschlen Mowatt 1
- Butterworth & Co. (publishers) Ltd 1
- Butterworth-Heinemann Ltd. 2