Publishers
- 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
- Wills & Hepworth Ltd. 108
- Wilo-Brain 1
- Wilson & Phillips 1
- Wilson Books 1
- Wilton 65 1
- Wiltshire Record Society 1
- Winchester Press 2
- Windrow & Greene 3
- Windward 1
- Wingham Press 1
- Wisdom Tree 1
- Withers Publishing 2
- Wm. B. Eerdmans 1
- Wm. Byles 1
- Wm. Collins Sons & Co. Ltd. 7
- Wm. H. Allen & Co. 1
- Wm. S. Orr and Co. 2
- Wnd Books 1
- Wolfe Publishing Limited 1
- Wolfhound Press 1
- Wolters-Noordhoff 1
- Woodall and Venables 1
- Woodcock Publications 2
- Woodenboat Publications 1
- Woodland Publishing 1
- Woodlands Press 1
- Woolhope Naturalists' Field Club 2
- Worcestershire Archaeological Society 1
- Worcestershire County Council 1
- Wordsworth Editions Ltd. 1
- Workers' Educational Association 1
- World Distributors (manchester) Ltd 3
- World Distributors Ltd. 17
- World Health Organization 1
- World International 2
- World International Publisher 4
- World International Publishing Limited. 2
- World Scientific 2
- World Ship Society 4
- World Working Group On Birds Of Prey And Owls 1
- World's Work 9
- World's Work Ltd. 18
- Worldlist 1
- Wrens Park Publishing 3
- Wright 1
- Wright's Coal Tar Soap 1
- Wrightway Publishing Limited 1
- Writersworld 1
- Wroughton History Group 6
- Wydawnictwo Bm Graniczkowska 1
- Wydawnictwo Morskie 1
- Wye Angling Publications 1
- Wygesty Publishing 1
- Wykeham Publications 1
- Wynn Williams (publishers) Ltd. 1
- Wysawnictwo Interpress 1
- Xpress Publising 1
- Y. Lolfa 1
- Y. Lolfa Cyf. 1
- Yale Centre For British Art 1
- Yale University Press 30
- Yearling Books 1
- Yeoman Publishing 2
- Yorkshire Archaeological Society 3
- Yorkshire Dales Landscape Research Trust 1
- Young World Productions 4
- Ystalyfera 1
- Zapchastexport 1
- Zenana Bible And Medical Mission 1
- Zenith Press 1
- Ziji Publishing 2
- Zoological Society Of London 10