Publishers
- Rizzoli International Publications 1
- Roadliner Transport Books 1
- Rob Blann 1
- Robert Culley 2
- Robert Frederick Ltd. 1
- Robert Gosling 1
- Robert Grant & Son 1
- Robert Grant & Son, Ltd. 1
- Robert Griffith 1
- Robert Hale 19
- Robert Hale Limited 9
- Robert Jennings 1
- Robert Maclehose And Co. Ltd 1
- Robert Pooley Ltd. 1
- Robert Saunderson 2
- 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 2
- Robinson Publishing Ltd 1
- Robson And Clarke 2
- Robson Books 5
- Rochester Press 1
- Rock The Boat 2
- Rockliff 1
- Rod Coleman 1
- Rodcrafters Press, Inc 1
- Roffey And Clark Ltd. 1
- Roger Gordon 1
- Roger Schlesinger 1
- Rolls-Royce Enthusiasts' club 1
- Rolls-Royce Heritage Trust 2
- Rompdown Ltd 2
- Rompford Publications 1
- Ron Jones Publications 2
- Rooke Publishing 1
- Rosenberg 1
- Rossall Archives 1
- Rossendale Books 1
- Rotherwood Press 1
- Round Tower Churches Society 1
- Roundhouse Books 1
- Roundoak Publishing 3
- Routemaster Operators & Owners Association 1
- Routledge 16
- Routledge & Kegan Paul 14
- Routledge & Kegan Paul Ltd 6
- Routledge, Warne, And Routledge 2
- Royal Academy of Arts 3
- Royal Air Force Benevolent Fund Enterprises 2
- Royal Botanic Garden Edinburgh 1
- Royal Botanic Gardens 6
- Royal Collection Enterprises Ltd 1
- Royal Commission On The Historical Monuments Of England 3
- Royal Dublin Society 3
- Royal Horticultural society 1
- Royal Irish Academy 1
- Royal Society Of Chemistry 1
- Royal United Service Institution 1
- Royle Publications Ltd. 2
- Rudd & Co. 1
- Rudgen Services 1
- Rudolf Muller 1
- Rudolf Steiner 1
- Rudolf Steiner Press 1
- Running Press 1
- Runnymede Malthouse Publishing 1
- Rupani Media 1
- Rupert Hart-Davis 7
- Rutgers University Press 2
- Rutten & Loening Berlag 1
- Ryelands 1