Publishers
- W & T Avery, Ltd 1
- W. & A.K. Johnston 2
- W. & A.K. Johnston & G.W. Bacon Ltd. 1
- W. & A.K. Johnston Limited 11
- W. & G. Foyle Ltd. 5
- W. & J. Mackay & Co. Ltd. 1
- W. & R. Chambers 17
- W. & R. Chambers Limited 173
- W. Alexander 1
- W. Brendon And Son 1
- W. Brendon And Son Ltd. 1
- W. Bulmer And Co. 1
- W. Collins Sons and Co. Ltd. 4
- W. Foulsham & Co. Ltd. 4
- W. Fr. Kaestner 1
- W. French 1
- W. Griffiths A'i Frodyr 1
- W. H. Allen 1
- W. Heffer & Sons Ltd. 6
- W. Jefferson & Son Ltd. 1
- W. Johnston 1
- W. Kent & Co. 2
- W. Lloyd 1
- W. Mack 1
- W. Mate & Sons Ltd. 2
- W. Mears 1
- W. Nicholson & Sons 2
- W. Nicholson & Sons Ltd. 1
- W. Publishing 1
- W. Reader 1
- W. Savage 1
- W. Spurrell 2
- W. Spurrell & Son 1
- W. Swan Sonnenschein & Co. 2
- W. Swann Sonnenschein & Allen 1
- W. Thacker & Co. 2
- W. Walker & Sons (Associated) Ltd. 4
- W. Wells 1
- W. Whittingham 1
- W. Wood 1
- W.A.N.H.S. Devizes 3
- W.B. Saunders 2
- W.D. & H.O. Wills 1
- W.D. Hayward 1
- W.D. Wharton 2
- W.F. Graham 1
- W.G. Lloyd 5
- W.H. Allen 5
- W.H. Allen & Co 2
- W.H. Allen & Co. Limited 2
- W.H. Freeman and Company 14
- W.H. Lizars 1
- W.H. Smith 1
- W.H.Allen 2
- W.H.C. London 1
- W.J.W. Hamill 1
- W.K. Kellogg 2
- W.M. Thompson 1
- W.P. Kennedy 1
- W.P. Nimmo, Hay & Mitchell 3
- W.S. Cowell Ltd. 1
- W.T. Cherry 1
- W.T.Mainwaring Hughes, D.L. 1
- W.W. Gardner 1
- W.W. Norton & Company Inc. 4
- Waanders 2
- Waddington Galleries 1
- Waddy Productions 2
- Wadsworth & Brooks 1
- Wadsworth Publishing 2
- Waine Research Publications 2
- Wajidalis 1
- Waldorf-Spielzeug 1
- Walker And Company 1
- Walker Books 111
- Walker Books Ltd 3
- Walsh, Holmes & Co. 1
- Walt Disney Productions 3
- Walter De Gruyter 2
- Walter Hill 1
- Walter Keller Press 1
- Walter Scott 1
- Walter Scott Ltd. 1
- Walton And Maberly 1
- Ward & Downey Limited 1
- Ward And Co. 2
- Ward and Lock 1
- Ward Lock 3
- Ward Lock & Co Ltd. 49
- Ward Lock Educational 2
- Ward Lock Limited 3
- Ward Lock Reprints 1
- Ward, Lock & Bowden Limited 1
- Ward, Lock & Co. 5
- Ward, Lock & Co. Limited 29
- Ward, Lock & Co. Ltd. 42
- Ward, Lock And Tyler 1
- Wargames Research Group 1
- Warne 2
- Warren & Son 1