| Rocket Gems Ltd | Information & communication | 2018 |
| Rocket Homes Ltd | Real estate | 2022 |
| Rockfast Ltd | Professional & scientific | 2023 |
| Rockhaven Technical Limited | Information & communication | 2016 |
| Rockley Tours Limited | Transport & logistics | 2017 |
| Rockstead Farms Limited | Agriculture & fishing | 2021 |
| Rockwealth Poole Ltd | Financial services | 2025 |
| Rockwell Sustainable Consultants Limited | Professional & scientific | 2023 |
| Roddor Investments Limited | Construction | 2022 |
| Rodella Ribs Limited | Manufacturing | 2020 |
| Rodin Properties Limited | Extraterritorial | 2017 |
| Roff Estates Limited | Real estate | 2013 |
| Rogan Lane Ltd | Real estate | 2016 |
| Roger Kiff Limited | Professional & scientific | 2024 |
| Rogers Wholesale Foods Limited | Wholesale & retail | 2015 |
| Rogue Marine Services Limited | Arts & recreation | 2020 |
| Rohan Care Limited | Health & social care | 2024 |
| Rohku Ltd | Wholesale & retail | 2022 |
| ROL Group UN Ltd | Other services | 2023 |
| ROL Watches Ltd | Wholesale & retail | 2021 |
| Rolkatrans Ltd | Transport & logistics | 2025 |
| Romana Freehold Limited | Real estate | 2007 |
| Romney Court Freehold Limited | Households | 2003 |
| Romsey Physiotherapy Clinic Ltd | Health & social care | 2003 |
| Romsey Saddlery Ltd | Wholesale & retail | 2011 |
| Romulus Games Ltd | Wholesale & retail | 2024 |
| Romza Limited | Information & communication | 2011 |
| Roof Revive Dorset Ltd | Administrative & support | 2024 |
| Roof Scan Limited | Construction | 2014 |
| Roofing and Insulation Services Ltd | Construction | 2024 |
| Roofline Solutions (Dorset) Ltd | Construction | 2024 |
| Rooftec Ltd | Construction | 2018 |
| Rooker Court RTM Company Ltd | Real estate | 2009 |
| Root and Rise Psychology Ltd | Health & social care | 2026 |
| Rooted Beings CIC | Education | 2026 |
| Rooted Kids Ltd | Education | 2025 |
| Rootex Limited | Health & social care | 2012 |
| Roots Food Service Sandwich Deli LP | | 2013 |
| Roots TOO Limited | Other services | 2003 |
| Rosa CMO Services Limited | Health & social care | 2015 |
| Rosa Publication Ltd | Information & communication | 2025 |
| Rose & Crown Inn Limited | Hospitality | 2020 |
| Rose Awnings Ltd | Wholesale & retail | 2021 |
| Rose Hodgson Ltd | Professional & scientific | 2022 |
| Roselawn Estates Limited | Construction | 2015 |
| Rosewarn CON Ltd | Construction | 2020 |
| Ross Mount Close (Management) Limited | Households | 2020 |
| Rosso Solutions Limited | Professional & scientific | 2018 |
| Rost Platform Ltd | Professional & scientific | 2025 |
| Rosé and Rodeo Art Studio Ltd | Wholesale & retail | 2026 |
| Rota Business Consultancy Ltd | Professional & scientific | 2019 |
| Roths Traditional Barbers Ltd | Other services | 2026 |
| Rothwell Property Developments Ltd | Construction | 2003 |
| Rotronics Systems Limited | Other services | 1995 |
| Roughchild Limited | Information & communication | 2021 |
| Round Table Children's Wish Limited | Health & social care | 1997 |
| Roundhouse Storage Ltd | Real estate | 2019 |
| Roundset Westingley Management Company Limited | Households | 2013 |
| Rout.Ai Limited | Information & communication | 2025 |
| Route PR Ltd | Administrative & support | 2005 |
| Routemaster Logistics Ltd | Transport & logistics | 2025 |
| Routes Learning Ltd | Education | 2022 |
| Routley Builders Ltd | Construction | 2025 |
| ROW Scaffolding Ltd | Construction | 2025 |
| Rowben Ltd | Construction | 2013 |
| Rowington Hall Residents Co. Limited | Households | 1989 |
| Rowledge Family Investments Limited | Real estate | 2024 |
| Rowley Home Improvements Limited | Construction | 1999 |
| Royae Limited | Wholesale & retail | 2025 |
| Royal Bay Care Homes Ltd | Health & social care | 1999 |
| Royal Court (Parkstone) Management Ltd | Administrative & support | 2011 |
| Royalejewellery Limited | Wholesale & retail | 2023 |
| Royoffers Limited | Wholesale & retail | 2025 |
| Royèl Plastering Ltd | Construction | 2020 |
| Rozanne Bell Art Limited | Arts & recreation | 2013 |
| Rozel Group Holdings Ltd | Financial services | 2025 |
| RP Plumbing & Heating Limited | Construction | 2007 |
| RPB Property Ltd | Construction | 2025 |
| Rpeme Ltd | Professional & scientific | 2020 |
| RPJ Consultancy Ltd | Professional & scientific | 2026 |
| Rple Property Investments Ltd | Real estate | 2021 |
| Rprn Digital Business Limited | Wholesale & retail | 2025 |
| RR Commercial Properties Ltd | Real estate | 2019 |
| RR Digital Brazil Ltd | Wholesale & retail | 2025 |
| Rrel Limited | Real estate | 2025 |
| RS Autochoice Ltd | Wholesale & retail | 2026 |
| RS Holistic Care Limited | Health & social care | 2013 |
| RS Property Solutions Maintenance & Home Improvements Ltd | Construction | 2019 |
| RSA UK Holdings Limited | Financial services | 2022 |
| RSB Business Solutions Ltd | Information & communication | 2022 |
| RSB Productions Ltd | Wholesale & retail | 2021 |
| Rsdai Limited | Information & communication | 2026 |
| RSK Estate Management Ltd | Real estate | 2021 |
| RSK Management Group Ltd | Financial services | 2021 |
| RSK Property Loss Management Services Ltd | Construction | 2016 |
| RSK SEO Ltd | Professional & scientific | 2013 |
| RSM Properties Ltd | Real estate | 2016 |
| RT Ideas Limited | Other services | 2007 |
| RT Sports World Limited | Wholesale & retail | 2025 |
| Rtlt Estates Ltd | Real estate | 2015 |