Publishers
- World Distributors Ltd. 29
- World Health Organization 1
- World International 2
- World International Publisher 3
- World International Publishing Limited. 2
- World Scientific 3
- World Ship Society 3
- World Working Group On Birds Of Prey And Owls 1
- World's Work 7
- World's Work Ltd. 15
- Worldlist 1
- Worley Publications 1
- Wrens Park Publishing 3
- Wright 1
- Wright's Coal Tar Soap 1
- Wrightway Publishing Limited 1
- Wrigley Un Son 1
- Writersworld 1
- Wroughton History Group 5
- Wydawnictwo Bm Graniczkowska 1
- Wydawnictwo Morskie 1
- Wydawnictwo Stratus 1
- Wye Angling Publications 1
- Wykeham Publications 1
- Wysawnictwo Interpress 1
- Xpress Publising 1
- Y. Lolfa 1
- Y. Lolfa Cyf. 1
- Yale Centre For British Art 1
- Yale University Press 21
- Yearling Books 1
- Yeoman Publishing 2
- Yerba Seca Publications 1
- Yore Publications 2
- Yorkshire Archaeological Society 3
- Yorkshire Dales Landscape Research Trust 1
- Young World Productions 3
- Ystalyfera 1
- Zenana Bible And Medical Mission 1
- Ziji Publishing 2
- Zoological Society Of London 10
- Zwemmer 1