Publishers
- The Society Of The Classic Guitar 2
- The Soman-Wherry Press Ltd. 1
- The Sound Approach 1
- The South Wales Institute Of Engineers 1
- The Sphere And Tatler 1
- The Sportsman's Press 5
- The Ss Uganda Trust 1
- The St. Margaret's Technical Press Limited 1
- The Stanborough Press Ltd. 2
- The Standfast Press 1
- The Stanmore Press 1
- The Starling Press 11
- The Stationery Office 1
- The Stephenson Locomotive Society 2
- The Stockton-On-Tees Railway Centenary Committee 1
- The Stonehill Publishing Company 3
- The Studio 4
- The Studio Limited 1
- The Studio Ltd. 1
- The Sunday School Union 8
- The Sunshine Press 2
- The Surtees Society 1
- The Syndicate Publishing Co. 1
- The Talbot Press Limited 1
- The Talyllyn Railway Preservation Society 1
- The Technical Publishing Co. Ltd. 1
- The Temple Press 3
- The Thames Publishing Co. 3
- The Tiger House Press 1
- The Tothill Press 13
- The Trade Papers Publishing Co. Ltd. 1
- The Trades Union Congress General Council 1
- The Transport Publishing Company 4
- The Travel Press & Publicity Co. 1
- The Tree Council 2
- The Trendine Press 1
- The Trustees Of The British Museum 1
- The Trustees Of The Fusiliers Museum Of Northumberland 1
- The Tryon Gallery 1
- The Tuttle, Morehouse & Taylor Company 1
- The University Of Arkansas Press 2
- The University of Georgia Press 5
- The University Press 1
- The University Press, Glasgow 2
- The Upper Eden History Society 1
- The Viking Press 4
- The Violet Needham Society 1
- The War Office 3
- The Warplane Wreck Investigation Group 1
- The Waterways Museum 2
- The Waverley Book Company Ltd. 2
- The Wellesbourne Village Society 1
- The Wellfleet Press 1
- The Welsh Outlook Press 2
- The Westminster Press 1
- The White Eagle Publishing Trust 1
- The Whitefriar's Press Ltd. 1
- The Wiggins Teape Group 1
- The William Herschel Society 1
- The Williams Press Limited 2
- The Wincanton Press 1
- The Windermere Nautical Trust 1
- The Windrush Press 1
- The Wordsworth Trust 1
- The World Publishing Company 3
- The Worshipful Company Of Grocers 1
- The Worshipful Livery Company Of Wales 1
- The Yorkshire Post 1
- Theophrastus 1
- Thieme 1
- Thirtynineassociates 1
- Thomas Beecham 1
- Thomas Boys 1
- Thomas C. Lothian Pty. Ltd 1
- Thomas Cautley Newby 1
- Thomas De La Rue & Co. Ltd. 2
- Thomas Kelly 3
- Thomas Murray And Son 1
- Thomas Nelson 1
- Thomas Nelson & Sons 62
- Thomas Nelson and Sons Ltd. 145
- Thomas Reed & Co. Ltd. 1
- Thomas Tegg 3
- Thomas Tegg & Son 1
- Thomas Telford 2
- Thomas Thomas 1
- Thomas Whittaker 1
- Thomas Y. Crowell 2
- Thomas Y. Crowell Co. 3
- Thomas Yoseloff 1
- Thomas-Photos 1
- Thomas's Publications Ltd. 1
- Thomasson-Grant 1
- Thomson Press 1
- Thornhill Press 9
- Thornton Butterworth 1
- Thornton Butterworth Ltd. 1
- Thorsons 1
- Thos. Agnew & Sons 1
- Thos. De La Rue & Co. 1