Publishers
- Roberts Brothers 2
- Robertson & Mullens Ltd. 1
- Robin Brass Studio 1
- Robin Hood Publishing 1
- Robin Smith 1
- Robinson Publishing 1
- Robson And Clarke 2
- Robson Books 6
- Rochester Press 1
- Rocking Books 1
- Rockliff 1
- Rod Coleman 1
- Roffey And Clark Ltd. 1
- Roger Gordon 1
- Roger Schlesinger 1
- Roli Books 1
- Rolls-Royce Enthusiasts' club 1
- Rolls-Royce Heritage Trust 2
- Rompdown Ltd 2
- Rompford Publications 1
- Ron Jones Publications 2
- Rosenberg 1
- Rossall Archives 1
- Rotherwood Press 1
- Round Tower Churches Society 1
- Roundhouse Books 1
- Roundoak Publishing 3
- Routemaster Operators & Owners Association 1
- Routledge 17
- Routledge & Kegan Paul 18
- Routledge & Kegan Paul Ltd 6
- Routledge, Warne, And Routledge 2
- Royal Academy of Arts 6
- Royal Air Force Benevolent Fund Enterprises 3
- Royal Botanic Garden Edinburgh 2
- Royal Botanic Gardens 5
- Royal Collection Enterprises Ltd 1
- Royal Commission On The Historical Monuments Of England 6
- Royal Dublin Society 4
- Royal Horticultural society 2
- Royal Irish Academy 2
- Royal Marines Historical Society 1
- Royal Mint 1
- Royal Naval Museum 1
- Royal Society Of Chemistry 1
- Royal United Service Institution 3
- Ruch Ltd Ab 1
- Rudd & Co. 1
- Rudge Whitworth Ltd. 1
- Rudgen Services 1
- Rudolf Muller 1
- Rudolf Steiner 1
- Rudolf Steiner Press 1
- Running Press 2
- Runnymede Malthouse Publishing 2
- Runpast Publishing 3
- Rupert Hart-Davis 5
- Ruskin Gallery Collection Of The Guild Of St George In Assoc With Lund Humphries 1
- Rutgers University Press 2
- Rutland County Museum 1
- Rutten & Loening Berlag 1
- Ryelands 1
- Rzm Publishing 1
- S. Endacott 1
- S. Guiterman & Co. Ltd. 1
- S.A. & M.J. Raymond 4
- S.B. Publications 1
- S.C. Brown, Langham & Company Ltd. 1
- S.C.M. Press Ltd. 1
- S.D.J. Publications 3
- S.H. Bousfield & Co. Ld. 1
- S.J. Mills 1
- S.P.C.K. 1
- S.R. Publishers Ltd. 3
- S.W. Partridge & Co. 12
- S.W. Partridge & Co. Ltd. 23
- Saalfield 1
- Sackett And Marshall 1
- Sackville Smeets Limited 1
- Saddleworth Historical Society 1
- SAE International 1
- Sage Publications 5
- Said Internationa Ltd 1
- Saiga Publishing Co. Ltd. 3
- Saint Andrew Press 1
- Saintin 1
- Salamander Books Ltd 2
- Salbaroli-Ravenna 1
- Salem House Publishers 1
- Sam Chesterman 1
- Sam Publications 7
- Sampson Low 31
- Sampson Low, Marston 1
- Sampson Low, Marston & Co. 19
- Sampson Low, Marston & Co. Ltd. 184
- Sampson Low, Marston, Searle, & Rivington 6
- Sampson Low, Son & Co. 1
- Sampson Low, Son & Marston 2
- Samuel Baxter's & Sons 1
- Samuel Fauche 1