| Rollinson Smith Financial Services Ltd | Financial services | 2005 |
| Roltrans Ltd | Transport & logistics | 2018 |
| Romaberis Ltd | Transport & logistics | 2017 |
| Romax Auto Limited | Wholesale & retail | 2024 |
| Romkeir Estates Ltd | Real estate | 2026 |
| Rondion Ltd | Administrative & support | 2018 |
| Ronellahairandbeauty Ltd | Other services | 2026 |
| Ronsel Ltd | Other services | 2019 |
| Roofscan Inspections Ltd | Construction | 2025 |
| Room Redo Design Ltd | Professional & scientific | 2025 |
| Roosim Ltd | Other services | 2019 |
| Roots Childrens Services Ltd | Health & social care | 2019 |
| Ropo Transport Ltd | Transport & logistics | 2016 |
| Rosan Social Care & Support Limited | Health & social care | 2024 |
| Rose & Bear Property Ltd | Real estate | 2024 |
| Rose Business Development Ltd | Professional & scientific | 2021 |
| Rose Corrosion Services Ltd. | Manufacturing | 1990 |
| Rose Cottage Limited | Real estate | 2019 |
| Rose Sprout Child Care Limited | Health & social care | 2025 |
| Rosethorne Limited | Real estate | 2021 |
| Roseva Health Ltd. | Health & social care | 2019 |
| Rosewarne Consulting Limited | Professional & scientific | 2016 |
| Rosewood Gardens Management Ltd | Households | 2022 |
| Rosewood Pet Products Limited | Wholesale & retail | 1960 |
| Rosewood Surveyors and Valuers Ltd | Professional & scientific | 2024 |
| Ross Family Properties (UK) Ltd | Real estate | 2020 |
| Ross Levenson Harris Limited | Professional & scientific | 1977 |
| Ross Myatt Limited | Professional & scientific | 2018 |
| Rossett Homes Developments Limited | Real estate | 2018 |
| Rotae Technology Ltd | Manufacturing | 2020 |
| Rotcivs Ltd | Wholesale & retail | 2025 |
| Rotel Limited | Extraterritorial | 2020 |
| Rotint Limited | Wholesale & retail | 2024 |
| Rottie Rumble and Friends Rescue CIC | Transport & logistics | 2026 |
| Rotundus Solutions Limited | Real estate | 2016 |
| Roudh SPV UK Limited | Real estate | 2021 |
| Round Consultancy Limited | Professional & scientific | 2025 |
| Round Cyber Ltd | Information & communication | 2018 |
| Round Touch Ltd | Information & communication | 2016 |
| Roundcorp Ltd | Financial services | 2019 |
| Roundsoftware Ltd | Information & communication | 2012 |
| Roundtable HR Ltd | Administrative & support | 2025 |
| Route 1 Recruitment & Training Ltd | Administrative & support | 2018 |
| Route 666 Ltd | Transport & logistics | 2024 |
| Rowbree Ltd | Real estate | 2024 |
| Rowen James Education Services Limited | Education | 2024 |
| Rowland Accommodations Ltd | Real estate | 2026 |
| Rowmere Properties Limited | Real estate | 2003 |
| Rowton Brewery Ltd | Manufacturing | 2008 |
| Rowton PUB Company Limited | Hospitality | 2017 |
| Roxy's RAW Food Limited | Wholesale & retail | 2020 |
| ROY Pari Ltd | Other services | 2019 |
| Royden Park Investments Limited | Hospitality | 2019 |
| Rozan Traders Ltd | Wholesale & retail | 2022 |
| RP Business Support Solutions Limited | Administrative & support | 2010 |
| RP Signalling Ltd | Professional & scientific | 2021 |
| Rplamzk Limited | Wholesale & retail | 2025 |
| RPM Restoration Ltd | Manufacturing | 2023 |
| RR Groundworks Limited | Construction | 2013 |
| RR Midland Estates Limited | Real estate | 2021 |
| RR Plant Limited | Construction | 2016 |
| RR Telford Ltd | Arts & recreation | 2025 |
| RRB Safety Services Ltd | Construction | 2026 |
| RS Home Foods Ltd | Hospitality | 2025 |
| RS Truck & Trailer Parts Ltd | Wholesale & retail | 2024 |
| RSA Cutting Technologies Limited | Wholesale & retail | 1988 |
| Rsidhu Limited | Wholesale & retail | 2024 |
| RSM Publishing Ltd | Information & communication | 2014 |
| RSP Property Limited | Real estate | 2022 |
| Rtfq-Atfq Limited | Professional & scientific | 2019 |
| Rtitb Limited | Information & communication | 1990 |
| Rtitb Properties Limited | Real estate | 1998 |
| RTS Door Systems Ltd | Construction | 2012 |
| RTT Consultants Ltd | Construction | 2017 |
| Rtto Consulting Ltd | Information & communication | 2014 |
| Rub&Dab BBQ Company Limited | Hospitality | 2023 |
| Rubik Builders Limited | Construction | 2019 |
| Rubik Developments Limited | Construction | 2026 |
| Rubik Group Limited | Construction | 2020 |
| Ruby Express Food Limited | Hospitality | 2016 |
| Rufees Limited | Public administration | 2022 |
| Rufgrade Limited | Information & communication | 2014 |
| Rufon Contracting Ltd | Administrative & support | 2018 |
| Rugby NOW Holdings Limited | Wholesale & retail | 2021 |
| Runtime Print Limited | Administrative & support | 2007 |
| Russells Homes Limited | Construction | 2022 |
| Russells Pies Limited | Manufacturing | 2011 |
| Ruthless Personal Training Ltd | Arts & recreation | 2018 |
| RW Pest Solutions Ltd | Administrative & support | 2021 |
| Rwilkinson Trades Ltd | Wholesale & retail | 2026 |
| Ryan Whitehouse Limited | Information & communication | 2020 |
| Rybec Ltd | Wholesale & retail | 2020 |
| Ryder Partnership Limited | Professional & scientific | 2011 |
| Ryderhealth Ltd | Health & social care | 2018 |
| Ryflow Ltd | Construction | 2008 |
| S & M Electrical Services Limited | Construction | 2016 |
| S & S Teldoc Limited | Health & social care | 2022 |
| S a Convenience Store Ltd | Wholesale & retail | 2023 |
| S a Pro Ltd | Real estate | 2025 |
| S and L Brickwork Ltd | Construction | 2019 |