Publishers
- Aston Publications 25
- Atelier Books 1
- Atheneum 3
- Atkinson Publications Ltd 1
- Atlantic Books 9
- Atlantic Monthly Press 2
- Atlantic Publishers 4
- Atlantic Transport Publishers 1
- Atlas Books 1
- Atrium Press Ltd. 2
- Audi Ag 1
- Augener Ltd. 13
- Augustus M. Kelley 3
- Aureus 1
- Aurora Art Publishers 3
- Aurora Publications Limited 2
- Aurum Press 13
- Australian Digest Pty. Ltd. 1
- Australian Publicity Council 1
- Australian War Memorial 2
- Autobooks Ltd. 6
- Autobus Review Publications 3
- Autocraft Books 1
- Autocritica 1
- Automedia Limited 1
- Automobile Quarterly 1
- Automobile Year 1
- Automobilia 15
- Autopress 3
- Autosport 4
- Autotechnica 1
- Aventinum 1
- Avia Books Ltd. 1
- Aviani & Aviani Editori 1
- Aviation Supplies And Academic, Inc 1
- Avon - Anglia Publications & Services 1
- Avon Gloucestershire And Somerset Environmental Monitoring Committee 1
- Avots 1
- Award Publications 4
- Aztex Corporation 1
- B. Arthaud 1
- B. Crosby & Co. 1
- B. Finch & Co. Ltd. 1
- B.A. Hathaway Printers 2
- B.B. Ltd. 10
- B.C. Williams 2
- B.G. Teubner 3
- B.T. Batsford 43
- B.T. Batsford Ltd. 49
- Babcock and Wilcox 1
- Back To Front 1
- Bailey Brothers and Swinfen Ltd. 4
- Bairns Books Ltd. 1
- Baldwin And Cradock 1
- Balfour Publications 1
- Ballantine Books 1
- Ballyhay Books 1
- Balzer And Bray 2
- Bancroft & Co. Ltd. 3
- Bancroft & Co.(Publishers) Ltd. 16
- Bantam Press 4
- Banyan Books 1
- Barbara Engel Therapy Services 1
- Barbican Art Gallery 1
- Barefoot Books 2
- Barnard, Roberts & Co. Inc 1
- Barnes & Noble Books 2
- Barnstormer Books 1
- Baron Birch 2
- Baron Jay Ltd. 1
- Barracuda Books 19
- Barre Publishers 1
- Barricade Books Inc. 1
- Barrie & Jenkins 3
- Barrie & Rockliff 1
- Barrington Stoke Ltd. 1
- Barron's 1
- Barron's Educational Series 2
- Barthes And Lowell 1
- Basic Books 2
- Basil Blackwell 37
- Bath University Press 1
- Baton Transport 1
- Batsford 1
- Batsford Academic and Educational Ltd. 1
- Battle Of Britain Historical Society 1
- Battle of Britain Prints International Ltd. 8
- Baudouin Freres 1
- Baumgartners Buchhandlung 1
- Bay View Books 14
- BBC 8
- BBC Books 3
- Bbpress 1
- BCA 4
- Beaulieu Books 4
- Beaumont Aviation Literature 1
- Beaumont Press 1
- Beaver Books 1
- Beaverbrook Newspapers Limited 5
- Beddington, Carshalton & Wallington Archaeological Society 1