| Reside Solutions Ltd | Real estate | 2017 |
| Resilience 4 Business Limited | Extraterritorial | 2011 |
| Resilience Logic Limited | Information & communication | 2025 |
| Resin Drives Birmingham Ltd | Construction | 2021 |
| Resolv Property 2 Ltd | Real estate | 2020 |
| Resolv Property Ltd | Real estate | 2020 |
| Resonant Edge Limited | Administrative & support | 2025 |
| Resort Vehicles International Ltd | Professional & scientific | 1995 |
| Rest Position Ltd | Information & communication | 2018 |
| Restwell Ltd | Other services | 2026 |
| Resuco Limited | Information & communication | 2023 |
| Resv PVT Ltd | Health & social care | 2024 |
| Resync Group Ltd | Professional & scientific | 2025 |
| Retail Properties Corp Limited | Administrative & support | 2019 |
| Retail Seventy Two Ltd | Wholesale & retail | 2018 |
| Retirement Intelligence Ltd | Administrative & support | 2016 |
| Retto Group Ltd | Professional & scientific | 2022 |
| REVELEN22 Marketing Ltd | Professional & scientific | 2019 |
| Revell Investments Ltd | Real estate | 2026 |
| Revelstone Limited | Information & communication | 2024 |
| Review Consulting Limited | Professional & scientific | 2008 |
| Revitalites Ltd | Wholesale & retail | 2021 |
| Revybe IT Recruitment Limited | Administrative & support | 2023 |
| Reyaan & Hashir Ltd | Health & social care | 2023 |
| RF QS Services Limited | Professional & scientific | 2017 |
| RFH Property Limited | Real estate | 2021 |
| RG Plants Ltd | Wholesale & retail | 2018 |
| RG Recycling Group Ltd | Administrative & support | 2014 |
| RG Recycling International Ltd | Administrative & support | 2014 |
| Rgac Ltd | Wholesale & retail | 2023 |
| RGS International Ltd | Professional & scientific | 2016 |
| RH & AH Properties LLP | | 2017 |
| RH Carpentry Services Ltd | Construction | 2023 |
| RH Fitness Ltd | Information & communication | 2025 |
| RH Holistic Therapy Ltd | Health & social care | 2023 |
| RH2 Technologies Limited | Information & communication | 2021 |
| Rhec Ltd | Construction | 2025 |
| RHH Properties Limited | Real estate | 2012 |
| Rhiannon Jones Design Ltd | Other services | 2023 |
| Rhino Records Limited | Professional & scientific | 2017 |
| Rhino Security Group Limited | Financial services | 2022 |
| Rhoden Training Solutions Ltd | Education | 2022 |
| Rhodes to Recruit Ltd | Hospitality | 2016 |
| Rical Properties Limited | Real estate | 2018 |
| Rice & Crunch Ltd | Hospitality | 2026 |
| Rice Property Ltd | Real estate | 2018 |
| Richard Adams Agencies Limited | Administrative & support | 2014 |
| Richard Martin FX Limited | Arts & recreation | 2012 |
| Richard Wallace Growth Consultancy Limited | Professional & scientific | 2026 |
| Richardjameshair Ltd | Other services | 2019 |
| Richer Investments (UK) 2 Ltd | Real estate | 2021 |
| Richer Investments (UK) Limited | Real estate | 2018 |
| Richmond De-Vere Group Ltd | Real estate | 2023 |
| Richmond Financials Ltd | Professional & scientific | 2021 |
| Richmond Private Limited | Wholesale & retail | 2021 |
| Ricketts Quarries Limited | Other services | 2014 |
| Riddings Midland Holdings Limited | Financial services | 2026 |
| Riddings Midland Ltd | Construction | 2011 |
| Riders Gloucester Ltd | Education | 2023 |
| Riders Kings Heath Ltd | Education | 2025 |
| Riders Kingstanding Ltd | Education | 2023 |
| Riders Motorcycle Instructor Training Ltd | Education | 2021 |
| Riders Redditch Ltd | Education | 2023 |
| Riders Wolverhampton Ltd | Education | 2023 |
| Ridgwell Management Consultants Ltd | Extraterritorial | 2005 |
| Right Housing Ltd | Real estate | 2017 |
| Rihaan Consultancy Ltd | Professional & scientific | 2021 |
| Rijyos Technovations Ltd | Information & communication | 2019 |
| Rildon Limited | Construction | 1972 |
| Riley Motor Club Spares Limited | Wholesale & retail | 1988 |
| Rimiqy Properties Limited | Real estate | 2025 |
| Ring of Bells Management Company Ltd | Extraterritorial | 2016 |
| Ringmen Ltd | Manufacturing | 2024 |
| Rinmclothing Ltd | Wholesale & retail | 2022 |
| Ripley Associates Limited | Administrative & support | 2020 |
| Rirfl Ltd | Administrative & support | 2015 |
| Rise Psychology Ltd | Health & social care | 2019 |
| Rise Within Ltd | Health & social care | 2025 |
| Rishikraj Technologies Ltd | Information & communication | 2019 |
| Rising Star Entertainment Limited | Administrative & support | 2018 |
| Rising Star Travel Ventures Ltd | Administrative & support | 2019 |
| Risk Systems Solutions Limited | Real estate | 2010 |
| Riskmapped Limited | Information & communication | 2025 |
| Rists Limited | Professional & scientific | 1966 |
| Rita Rose Ltd | Wholesale & retail | 2021 |
| Rivendell Property Group Ltd | Real estate | 2026 |
| River Oakfield Limited | Information & communication | 2017 |
| River Rock Properties Ltd. | Health & social care | 2014 |
| Riversdale Management (Leamington Spa) Limited | Real estate | 2008 |
| Riverside (Coleshill) Management Company Limited | Households | 1994 |
| Riverside Flats (Coleshill) Management Company Limited | Households | 1994 |
| RJ Dass & Associates Limited | Financial services | 2021 |
| RJ Neurophysiology Limited | Health & social care | 2015 |
| RJB Energy Limited | Professional & scientific | 2014 |
| RJD Estates Limited | Financial services | 2021 |
| RJD Postpartum Limited | Other services | 2024 |
| Rjenergy.Co.Uk Ltd | Manufacturing | 2007 |
| RJL Commercial Services Ltd | Professional & scientific | 2026 |
| RJO Consultants Ltd | Professional & scientific | 2024 |
| RJS Mortgages Ltd | Financial services | 2022 |