Publishers
- Atlantic Monthly Press 3
- Atlantic Publishers 6
- Atlantic Transport Publishers 1
- Atlas Books 1
- Atlas Publishing Co. Ltd. 1
- Atrium Press Ltd. 2
- Auckland University Press 1
- Audi Ag 1
- Augener Ltd. 14
- Augustus M. Kelley 2
- Aurora Art Publishers 2
- Aurora Publications Limited 2
- Aurum Press 5
- Australian Digest Pty. Ltd. 1
- Australian Publicity Council 1
- Australian Railway Historical Society 1
- Australian War Memorial 2
- Autobus Review Publications 3
- Autocritica 1
- Automobilia 7
- Autosport 1
- Autotechnica 4
- Aventinum 1
- Avia Books Ltd. 1
- Aviation Supplies And Academic, Inc 1
- Aviation-Usk 1
- Avon - Anglia Publications & Services 1
- Avon Gloucestershire And Somerset Environmental Monitoring Committee 1
- Avots 1
- Award Publications 6
- B. & H. White Publications Ltd. 1
- B. Arthaud 1
- B. Finch & Co. Ltd. 1
- B.B. Ltd. 12
- B.G. Teubner 3
- B.T. Batsford 36
- B.T. Batsford Ltd. 28
- Babcock and Wilcox 1
- Back To Front 1
- Bailey Brothers and Swinfen Ltd. 1
- Bailey Newspaper Group 1
- Bairns Books 1
- Baldwin And Cradock 1
- Balfour Publications 1
- Ballantine Books 1
- Ballantyne, Hanson & Co. 1
- Balzer And Bray 2
- Bancroft & Co. Ltd. 3
- Bancroft & Co.(Publishers) Ltd. 17
- Bantam Books 1
- Bantam Press 4
- Barbican Art Gallery 1
- Barefoot Books 3
- Barnard, Roberts & Co. Inc 3
- Barnes & Noble Books 2
- Barnes & Noble Inc. 1
- Baron Books 1
- Baron Publishing 1
- Barracuda Books 18
- Barre Publishers 1
- Barrie & Jenkins 4
- Barrie & Rockliff 1
- Barrie Law 1
- Barrington Stoke Ltd. 1
- Barron's 3
- Barron's Educational Series 2
- Barthes And Lowell 1
- Barton Publishers 1
- Basic Books 2
- Basil Blackwell 27
- Bath City Council 1
- Bath University Press 1
- Baton Transport 2
- Battle Of Britain Historical Society 1
- Battle of Britain Prints International Ltd. 1
- Baudouin Freres 1
- Baumgartners Buchhandlung 1
- Bay View Books 3
- BBC 14
- BBC Books 5
- Bbpress 1
- BCA 1
- Beaufoy Books 1
- Beaulieu Books 2
- Beaver Books 1
- Beaver Publishing Limited 2
- Beaverbrook Newspapers Limited 8
- Beckton Transport Publishing 1
- Beddington, Carshalton & Wallington Archaeological Society 1
- Bedrock Press 1
- Bee Craft 1
- Beech Publishing House 1
- Beekay Publishers 1
- Beekman House 2
- Beginner Books 1
- Belford, Middlebrook & Co. 1
- Belhaven Press 4
- Belitha Press 1
- Bell & Daldy 2
- Bell & Hyman Ltd. 2