| Results Excel Limited | Information & communication | 2011 |
| Retreat Asaba Limited | Arts & recreation | 2023 |
| Revive Mind Limited | Other services | 2025 |
| Revolution Kitchen Limited | Extraterritorial | 2012 |
| RG Pubs Limited | Other services | 2018 |
| RH Classics Limited | Wholesale & retail | 2022 |
| Rhodes Property (Management) Limited | Real estate | 2021 |
| Richard Widdison HR Consultancy Ltd | Professional & scientific | 2025 |
| Ridgecrest Consultancy Limited | Professional & scientific | 2015 |
| Ridgecrest Investments Ltd | Financial services | 2023 |
| Riding Simulator by Lucy Mcwilliam Ltd | Education | 2024 |
| Ringlife Limited | Real estate | 2011 |
| Riparia Media Limited | Wholesale & retail | 2017 |
| Ripon R Limited | Construction | 2007 |
| Rise AS WE ARE CIC | Education | 2025 |
| Ritual Audio Limited | Information & communication | 2020 |
| RJ Sales Consultancy Ltd | Professional & scientific | 2025 |
| Rjayne Consulting Ltd | Professional & scientific | 2026 |
| Rjgray Transport (MM) Ltd | Transport & logistics | 2022 |
| RKT Kickboxing Limited | Arts & recreation | 2026 |
| RMC Supplies Limited | Wholesale & retail | 2020 |
| RMP Solutions Limited | Professional & scientific | 2016 |
| Ro-Tec Services Limited | Manufacturing | 2003 |
| Roam Engineering Ltd | Professional & scientific | 2025 |
| ROB Holyland Construction Ltd | Construction | 2022 |
| Robert Smith SCP Ltd | Information & communication | 2024 |
| Roberts Construction (Leicester) Limited | Construction | 2023 |
| Roberts IT Services Ltd | Information & communication | 2012 |
| Robin DAW Business Matters Ltd | Financial services | 2012 |
| Robin Hood Media Limited | Professional & scientific | 2010 |
| Rockshore Developments Limited | Construction | 2021 |
| Rodstone Developments UK Ltd | Construction | 2025 |
| Rodwellbeing Ltd. | Education | 2014 |
| Roofcentral Limited | Construction | 2021 |
| Roontech Ltd | Professional & scientific | 2022 |
| Rootd Ltd | Wholesale & retail | 2024 |
| Roots to Wings Community Interest Company | Education | 2014 |
| Rosseve Ltd | Wholesale & retail | 2003 |
| Rotary Torque Ltd | Transport & logistics | 2012 |
| Rotherhill Rotherham Ltd | Construction | 2024 |
| Roundwin Limited | Other services | 1987 |
| Rourkes Diamonds Limited | Arts & recreation | 2024 |
| RPG Nottingham Limited | Professional & scientific | 2025 |
| RR Accountancy Ltd | Professional & scientific | 2013 |
| Rscs Limited | Real estate | 1998 |
| RSG Electrical Engineering Ltd | Professional & scientific | 2024 |
| RTC Fencing Ltd | Construction | 2010 |
| RTC Plant Hire Midlands Ltd | Administrative & support | 2025 |
| Rumi Mortgages Ltd | Financial services | 2023 |
| Runciao Couriers Limited | Transport & logistics | 2019 |
| Rural Antics Limited | Education | 2019 |
| Rural Insight Land and Development Ltd | Real estate | 2023 |
| Rural Retailer Ltd | Administrative & support | 2019 |
| Rutland Asbestos Training and Surveying UK Ltd | Professional & scientific | 2026 |
| Rutland Building Services Ltd | Construction | 2016 |
| Rutland Care and Support Ltd | Health & social care | 2025 |
| Rutland Consultancy (International) Limited | Professional & scientific | 2022 |
| Rutland Contracting Limited | Construction | 2012 |
| Rutland Golf SIM Ltd | Arts & recreation | 2025 |
| Rutland Horizon Limited | Arts & recreation | 2003 |
| Rutland Land and Property Limited | Real estate | 2014 |
| Rutland Prestige Centre Limited | Wholesale & retail | 2004 |
| Rutland Roofing and Building Ltd | Extraterritorial | 2018 |
| Rutland Roofing Services Ltd | Construction | 2018 |
| Rutland Thermal Engineering Ltd | Construction | 2025 |
| S & B Rendering Ltd | Construction | 2021 |
| S & G Plumbing and Heating Services Limited | Construction | 2005 |
| S & L Hatcheries Limited | Agriculture & fishing | 2009 |
| S & T Ellis Holdings Limited | Financial services | 2023 |
| S G Fabrications Ltd | Manufacturing | 2026 |
| S J Hollis Brickwork Ltd | Construction | 2015 |
| S J Hollis Investment Property Limited | Real estate | 2018 |
| S J Rose Electrical Contractors Ltd | Construction | 2015 |
| S M Transport Leicester Ltd | Transport & logistics | 2013 |
| S R Construction (Melton Mowbray) Limited | Construction | 2024 |
| S R Hibbitt & Sons Ltd | Construction | 2022 |
| S.B Motor Services Limited | Wholesale & retail | 2026 |
| S.Green Arboriculture Limited | Agriculture & fishing | 2024 |
| S.R Consultancy & Management Services Ltd | Professional & scientific | 2013 |
| S.S Accident Claims Limited | Financial services | 2018 |
| Saddlers Court (Moir Close) Management Company Limited | Households | 2004 |
| Saeed Palace Limited | Hospitality | 2021 |
| Safe Hands Consultancy Services Ltd | Construction | 2018 |
| Safe Voice Limited | Professional & scientific | 2023 |
| Safetty Systems Ltd | Professional & scientific | 2013 |
| Safety Management Services (GB) Limited | Professional & scientific | 2011 |
| Saint Jude Limited | Information & communication | 2019 |
| SAM Louise 91 Limited | Professional & scientific | 2024 |
| Samosa Wallah Ltd | Manufacturing | 2017 |
| Samota Consulting Limited | Professional & scientific | 2011 |
| Samworth Brothers (Holdings) Limited | Professional & scientific | 1946 |
| Samworth Brothers Distribution Limited | Extraterritorial | 1996 |
| Samworth Brothers Health Care Scheme Limited | Administrative & support | 2004 |
| Samworth Brothers Superannuation Scheme Trustee Limited | Financial services | 2020 |
| Sancti Wellness Ltd | Wholesale & retail | 2020 |
| Sanham Agricultural Planning Limited | Administrative & support | 2007 |
| Sapphire Rose Therapy Ltd | Health & social care | 2025 |
| Sarah Dickson Design Ltd | Administrative & support | 2017 |
| Sarpech Catering Ltd | Hospitality | 2025 |
| Savantium Ltd | Professional & scientific | 2008 |