| Riskstop Limited | Professional & scientific | 2000 |
| Riskstop Surveys Limited | Professional & scientific | 2007 |
| River Bride Vineyard Limited | Professional & scientific | 2003 |
| River Iwerne Ltd | Real estate | 2022 |
| Riverblade Limited | Information & communication | 2004 |
| Riverrock Limited | Construction | 2024 |
| Riverside Road Owners Limited | Households | 2025 |
| Riverside Veterinary Clinic Limited | Professional & scientific | 2015 |
| Riverslea Court (Southbourne) Limited | Households | 1983 |
| Riverview Iford RTM Co Limited | Households | 2024 |
| Riviera Court Freehold Limited | Households | 2022 |
| Riviera Court RTM Company Ltd | Households | 2020 |
| Riviera Property Management LLP | | 2025 |
| Riwaya Consulting Limited | Information & communication | 2015 |
| Riyanbb Ltd | Wholesale & retail | 2026 |
| Rjaswal Ltd | Health & social care | 2019 |
| RJD and SON Limited | Construction | 2017 |
| RJH Lettings Ltd | Real estate | 2023 |
| RJM Audio Visual Ltd | Administrative & support | 2019 |
| RK Nexus Ventures Ltd | Wholesale & retail | 2025 |
| RK Retailers Ltd | Wholesale & retail | 2025 |
| RK SPV Limited | Financial services | 2013 |
| RKS Ecom Trading Limited | Wholesale & retail | 2025 |
| RL Designs Limited | Construction | 2009 |
| Rlba Solutions Ltd | Information & communication | 2025 |
| RLM Jobs Ltd | Administrative & support | 2024 |
| RLM Services (Christchurch) Ltd | Administrative & support | 2012 |
| RM Synergy Consulting Limited | Professional & scientific | 2025 |
| RMC TM Services Ltd | Transport & logistics | 2020 |
| Rmjo Software Ltd | Information & communication | 2024 |
| RMS Electrical (South Coast) Ltd | Construction | 2022 |
| RMV Painting and Decorating Limited | Construction | 2019 |
| RMV Sounds Ltd | Extraterritorial | 2022 |
| RMV Therapies Ltd | Other services | 2024 |
| Rn&Co Limited | Health & social care | 2022 |
| RNA Projects Ltd | Construction | 2019 |
| RNC Finishing Ltd | Other services | 2020 |
| RNR Construction Group Ltd | Construction | 2023 |
| RNR Contracting Ltd | Construction | 2024 |
| Roaman Limited | Administrative & support | 2019 |
| Roastick Ltd | Hospitality | 2026 |
| Rob's Workshop Limited | Wholesale & retail | 2025 |
| Robbins Agents Limited | Wholesale & retail | 2016 |
| Roberts Asset Management Limited | Real estate | 2017 |
| Roberts Consultancy and Training Ltd | Professional & scientific | 2013 |
| Roberts Residential Limited | Households | 1995 |
| Roberts Residential Property Services Limited | Households | 2010 |
| Robingo Limited | Hospitality | 2024 |
| Robinia Court Management Company Limited | Households | 2015 |
| Robinson Toms Recruitment Limited | Professional & scientific | 2000 |
| Robson Compliance Management Limited | Administrative & support | 2018 |
| Robton Engineering LLP | | 2006 |
| Rocha Bodyworks Ltd | Other services | 2025 |
| Rock Executive Services Ltd | Administrative & support | 2016 |
| Rock Hard Concrete Dorset Ltd | Manufacturing | 2019 |
| Rockbourne Solutions Limited | Information & communication | 1998 |
| Rocket Spaces Ltd | Construction | 2024 |
| Rockett Developments Limited | Real estate | 2002 |
| Rockett Homes Ltd | Real estate | 2016 |
| Rockford Classics Ltd | Wholesale & retail | 2018 |
| Rockmount Freehold Limited | Households | 2017 |
| Rocksand Developments Limited | Real estate | 2016 |
| Rocktime Limited | Information & communication | 1999 |
| Rocky the Wonder Dog Limited | Information & communication | 2008 |
| Rodas Marine Ltd | Manufacturing | 2025 |
| Rogers Rooms Bmth Limited | Hospitality | 2022 |
| Rohan Bagshawe Limited | Professional & scientific | 2002 |
| Rojo Assets Ltd | Real estate | 2019 |
| Rojon Court Management 1995 Limited | Households | 1996 |
| Rokjo Ltd | Real estate | 2016 |
| Rolling Spanners Ltd | Manufacturing | 2017 |
| Rolo Properties Limited | Real estate | 1972 |
| Romaana Kanamia Ltd | Health & social care | 2023 |
| Roman Driveways Corporation Limited | Construction | 2025 |
| Roman Landscaping Ltd | Administrative & support | 2020 |
| Romanov Consultancy Limited | Professional & scientific | 2022 |
| Romanov Properties Limited | Real estate | 2022 |
| Romee Investments Limited | Construction | 2009 |
| Ronald Crane Properties LLP | | 2023 |
| Roobidoos Limited | Hospitality | 2026 |
| Roof Forensics Ltd | Construction | 2022 |
| Roof Rescue South Coast Ltd | Construction | 2025 |
| Roofsmiths LLP | | 2016 |
| Roomy Properties Ltd | Real estate | 2019 |
| Rooster Construction Ltd | Construction | 2022 |
| Rooster Flame Grilled Limited | Hospitality | 2024 |
| Root & Harmony Ltd | Professional & scientific | 2023 |
| Root Commerce Ltd | Information & communication | 2026 |
| Rooted Investments Ltd | Real estate | 2023 |
| Roots That Flourish Ltd | Professional & scientific | 2026 |
| Rootstock Property Ltd | Real estate | 2023 |
| Rootstock Trading Limited | Real estate | 2024 |
| Rootstone Ltd | Other services | 2023 |
| Rootwire Ltd. | Information & communication | 2014 |
| Rope Access Limitless Ltd | Construction | 2015 |
| Ropley Court Limited | Households | 2019 |
| Rosa & Camelia Ltd | Wholesale & retail | 2024 |
| Rose Court (Poole) Management Co. Limited | Households | 1985 |
| Roseco Retail Limited | Wholesale & retail | 2021 |
| Roselyne Properties Limited | Real estate | 2016 |