| Rize Labs Ltd | Information & communication | 2025 |
| RJH 308 Limited | Real estate | 2019 |
| RJS Engineering Limited | Manufacturing | 2015 |
| RJS White Consulting Limited | Administrative & support | 2015 |
| RK Medics Limited | Health & social care | 2023 |
| RLE Futuremotiv Limited | Professional & scientific | 2018 |
| RLE Global Operations Limited | Professional & scientific | 2013 |
| Rlty Ltd | Information & communication | 2025 |
| Rmes Analytics Limited | Other services | 2018 |
| RN Productions Ltd | Arts & recreation | 2024 |
| Rndr Ltd | Real estate | 2025 |
| RNR Products Ltd | Manufacturing | 2019 |
| Roadsure Limited | Administrative & support | 2015 |
| Roaring Investments Limited | Financial services | 2021 |
| Robert Cupitt Limited | Wholesale & retail | 1954 |
| Robert Lavers Architects Limited | Professional & scientific | 2010 |
| Robot JAM Design Limited | Information & communication | 2009 |
| Robscott Limited | Wholesale & retail | 1987 |
| Robur Properties Limited | Real estate | 2019 |
| Rocami Ltd | Wholesale & retail | 2010 |
| Rochester Sensors UK Limited | Manufacturing | 1977 |
| Rockallwight PR Ltd | Professional & scientific | 2018 |
| Rockart Limited | Administrative & support | 1996 |
| Rockhopper Property Services Ltd | Households | 2023 |
| Rocknrolga Ltd | Arts & recreation | 2021 |
| ROCKSTARFILMS25 Ltd | Information & communication | 2025 |
| Rodeo Management Limited | Wholesale & retail | 2019 |
| Rodeo Management Services Limited | Professional & scientific | 2024 |
| Rokeby Consulting Limited | Information & communication | 2014 |
| Roll With the Punches Ltd | Hospitality | 2022 |
| Roman Property Midlands Limited | Real estate | 2025 |
| Roof Maintenance Leamington Ltd | Construction | 2021 |
| Rose & Herne Advisory Limited | Professional & scientific | 2026 |
| Rose Developments Midlands Ltd | Construction | 2025 |
| Rose Smile Ltd | Health & social care | 2018 |
| Roselease Limited | Real estate | 1996 |
| Rosemary’S Baby Ltd | Arts & recreation | 2021 |
| Rosewood Lettings Ltd | Real estate | 2020 |
| Rothley Air Movements Limited | Construction | 2013 |
| Rototilt Limited | Administrative & support | 2016 |
| Rotwild Engineering Services Limited | Professional & scientific | 2021 |
| Rouncil Services Limited | Professional & scientific | 2020 |
| Rowan House Consulting Limited | Professional & scientific | 2025 |
| Rowington Club Limited | Hospitality | 2020 |
| Rowington Narrowboats Limited | Arts & recreation | 2020 |
| Rowland Group Holdings Ltd | Professional & scientific | 2023 |
| Royel Currys Limited | Hospitality | 2025 |
| RP 83 Services Limited | Health & social care | 2025 |
| RP Distribution Ltd | Wholesale & retail | 2025 |
| RPA Training Limited | Information & communication | 2015 |
| RR FIX Ltd | Manufacturing | 2016 |
| RSA Waterheating Limited | Extraterritorial | 1935 |
| RSB Midlands Ltd | Construction | 2024 |
| RSK Chile (UK) Limited | Professional & scientific | 2020 |
| RSL Trustee Company Limited | Construction | 2006 |
| RSP Services 18 Ltd | Construction | 2021 |
| Rubble & Benji Limited | Professional & scientific | 2026 |
| Rubio Monocoat UK Limited | Manufacturing | 2013 |
| Run Stronger Limited | Arts & recreation | 2022 |
| Run With Wolves Animal Services Ltd | Professional & scientific | 2022 |
| Russell Lane Jewellers Limited | Extraterritorial | 2019 |
| Russell Newbery and Company Limited | Extraterritorial | 1998 |
| Russell Newbery Register Limited | Other services | 1997 |
| Ruth Stern Consulting Limited | Professional & scientific | 2012 |
| RVF Consultancy Limited | Professional & scientific | 2025 |
| Rymer Property Limited | Real estate | 2017 |
| Rynlds Ltd | Professional & scientific | 2025 |
| Rytc Creatives CIC | Education | 2022 |
| S & O Developments Limited | Construction | 2023 |
| S B Shop Fitting & Building Services Limited | Construction | 2014 |
| S Botton Plastering & Rendering Limited | Construction | 2020 |
| S C Motor Services (Nuneaton) Limited | Wholesale & retail | 2011 |
| S D Wyatt LLP | | 2026 |
| S J Accountancy Ltd | Professional & scientific | 2023 |
| S J H Restaurants Ltd | Hospitality | 2023 |
| S N Building Interiors and Landscaping Limited | Construction | 2021 |
| S P a Services Limited | Manufacturing | 2003 |
| S&A Estate Management Ltd | Real estate | 2017 |
| S&M Uncluttering Ltd | Administrative & support | 2025 |
| S.O.R Motorcycles Ltd | Wholesale & retail | 2026 |
| S2C Ventures Limited | Information & communication | 2026 |
| SAA Chicken Ltd | Hospitality | 2021 |
| Sabik Offshore Ltd | Professional & scientific | 2014 |
| Sabor Sabor Ltd | Hospitality | 2020 |
| Sabrn UK Limited | Manufacturing | 2024 |
| Sadeio Limited | Information & communication | 2023 |
| Sadler & Partridge Limited | Real estate | 2016 |
| Sadler & Partridge Specialist Property Ltd | Real estate | 2017 |
| Safe Horizon Security Ltd | Administrative & support | 2024 |
| Safeline Warwick | Administrative & support | 1998 |
| Safer Landlord Services Limited | Financial services | 2020 |
| Safety First Risk Assessment Ltd | Public administration | 2024 |
| Safetynow Training Limited | Professional & scientific | 2014 |
| Saftconsulting Limited | Professional & scientific | 2018 |
| Saiskanda Limited | Real estate | 2022 |
| Saivair Properties Ltd | Real estate | 2019 |
| Saleharbor Trading Limited | Manufacturing | 2018 |
| Sales Web Ltd | Professional & scientific | 2025 |
| Sally Jones Features Limited | Professional & scientific | 2010 |
| Salmin Limited | Information & communication | 2016 |