Publishers
- Booklaw Publications 1
- Booklaw Railbus 4
- Bookman Publishing 1
- Bookmarque Publishing 3
- Books For Children 1
- Books UK Ltd. 1
- Boolarong Publications 1
- Booth Museum Of Natural History 1
- Booth-Clibborn 2
- Boots the Chemists 4
- Bosch 2
- Bossiney Books 2
- Bothy Books 1
- Bound Biographies 1
- Bounty Books 7
- Bountyhunter Publications 1
- Boxtree 1
- Boxtree Limited 1
- Bracken Books 9
- Bradbury 1
- Bradbury & Evans 3
- Bradbury Press 3
- Bradbury, Agnew & Co. 2
- Bradbury, Agnew & Co. Ltd. 4
- Bradbury, Evans And Co. 1
- Bradford Barton 2
- Bradley Publications Of Hull 1
- Bramhall House 2
- Bramley Books 3
- Brassbounders (publishing) 1
- Brassey's 12
- Brassey's Defence Publishers 1
- Braun & Schneider 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 A.F. Elks 1
- Brian Trodd 2
- Bridge Books 4
- Brill 5
- Brimax Books 2
- Bristol and Gloucestershire Archaeological Society 4
- Bristol Branch Of The Historical Association 1
- Bristol City Council 1
- Bristol Printers Ltd. 1
- Bristol Record Society 2
- British Association for the Advancement of Science 2
- British Aviation Research Group 2
- British Books Ltd. 1
- British Broadcasting Corporation 2
- British Bryological Society 1
- British Bus Publishing 2
- British Electrical Development Association 1
- British Film Institute 1
- British Gas Council 1
- British Geological Survey 1
- British Leyland 2
- British Museum 4
- British Museum (Natural History) 2
- British Museum Publications 3
- British Ornithologists' union 23
- British Railways 2
- British Railways Board 1
- British Transport Commission 1
- British Trust for Ornithology 19
- Broads 1
- Brockhampton Press 99
- Brockhampton Press Ltd. 39
- Brooke Bond 1
- Brooke Bond Oxo 1
- Brooklands Books 29
- Brooks Cole 2
- Browcom Group Plc. 2
- Brown & Bibby 1
- Brown & Co. 1
- Brown and Brown 1
- Brown Fox Books 1
- Brown Watson 4
- Brown Watson Ltd 1
- Brown Wells & Jacobs Ltd. 2
- Brown, Son & Ferguson Ltd. 2
- Browne and Nolan Ltd. 1
- Brownsword Books 1
- Bruce & Gawthorn Limited 1
- Bruce Main-Smith & Co. Ltd. 4
- Bruno Cassirer 1
- Brunot-Labbe 1
- Brynglas Community Education Centre 1
- Bryngold Books 1
- Buchan & Enright 1
- Buchebroc Press 1
- Buckingham Press 1
- Budding Books 2
- Budget Print & Design 1
- Bufe-Fachbuch 1