Publishers
- Rihan. CC 1
- Rijksmuseum Amsterdam 1
- Rila 2
- Riley Motors Limited 2
- Rily Publications Ltd 1
- RINA Ltd 1
- Ringpress Books 14
- Ripley Entertainment Inc. 1
- Rixon Groove 2
- Roadliner Transport Books 2
- Rob Blann 1
- Robert Culley 2
- Robert Frederick Ltd. 2
- Robert Gosling 2
- Robert Grant & Son 1
- Robert Griffith 1
- Robert Hale 17
- Robert Hale & Company 1
- Robert Hale Limited 11
- Robert Jennings 1
- Robert Maclehose And Co. Ltd 1
- Robert Pooley Ltd. 1
- Robert Saunderson 2
- Robert Schwandl 1
- Robert Scott 1
- Robert Stodart 1
- Robert Tyas 1
- Roberts 3
- 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