Publishers
- Westbury Publishing 2
- Western Australian Museum 1
- Western Canadian Distributors Ltd. 1
- Western Mail 3
- Western Mail And Echo Limited 3
- Western Publishing Company, Inc. 1
- Westerners Publications Ltd. 2
- Westerway Books 1
- Westminster Press Ltd. 2
- Westmorland Gazette 2
- WH Smith 1
- Wharncliffe Books 4
- Wharncliffe Publishing Limited 2
- Wharncliffe Transport 1
- Wheaton 1
- Wheaton Of Exeter 1
- Wheelhouse Books 1
- Wheldon & Wesley 1
- Whitbread & Co. Ltd. 1
- Whitby Press 1
- Whitcombe and Tombs 1
- White Boar Publishing 1
- White Crescent Press 2
- White Lion Books 4
- White Lion Publishers Limited 5
- White Mane Books 2
- White Mouse 2
- Whitebrook Conservation Group 1
- Whiting & Co. 2
- Whiting & Wheaton 1
- Whitman 1
- Whitman Publishing Company 10
- Whitney Library Of Design 1
- Whittaker & Co. 5
- Whittet Books 1
- Whittles Publishing 3
- Wicwas Press 1
- Wild Swan Publications 19
- Wildearth 1
- Wilding & Son Ltd. 7
- Wildwood House 1
- Wiley 3
- Wiley-Academy 1
- Wiley-Blackwell 1
- Wiley-Interscience 4
- Wilhelm Ernst & Sohn 2
- William And George North 1
- William and Robert Chambers 4
- William Andrews & Co. 4
- William Bailey 1
- William Blackwood 1
- William Blackwood & Sons Ltd. 2
- William Blackwood and Sons 11
- William Brendon And Son 1
- William Briggs 1
- William Brown 1
- William C. Brown 1
- William Clowes & Sons Ltd. 2
- William Collins 11
- William Collins Sons & Co. Ltd. 9
- William Darton 1
- William Edwin Rudge 1
- William Graham 1
- William Heinemann 65
- William Heinemann Ltd. 50
- William Hodge and Company Limited 1
- William Hunter 1
- William J. Hay 1
- William Kidd & Sons Ltd. 1
- William Kimber 18
- William Lewis 8
- William Lewis (Printers) Ltd 2
- William Lewis(Printers)Ltd. 2
- William Macintosh 2
- William Mackenzie 2
- William Miller 1
- William Morrow 2
- William Morrow & Company 2
- William Morrow & Company Inc 1
- William P. Nimmo 1
- William Pamplin 1
- William Phillips 1
- William Pickering 5
- William Pollard 2
- William Pollard & Co. Limited 2
- William R. Jenkins Company 1
- William Rees 1
- William Reeves 1
- William Rice 1
- William Satchell & Co. 1
- William Sessions 1
- William Shoberl 1
- William Smith 1
- William Spurrell 1
- William Tegg 1
- Williams & Norgate Ltd. 1
- Williams and Norgate 1
- Williams and Norgate Ltd. 1
- Williams Publishing And Distributing Co. Ltd. 1
- Willow Bookscreek Press 1