| Re-Tec Ltd | Wholesale & retail | 2012 |
| Reacta Biotech Limited | Professional & scientific | 2013 |
| Reacta Healthcare Ltd | Professional & scientific | 2021 |
| Reades - Hawarden (Sales) Ltd | Real estate | 2025 |
| Realcare Service Limited | Wholesale & retail | 2008 |
| Reality Experts Ltd | Information & communication | 2023 |
| Realmix Estates Ltd | Real estate | 2024 |
| Red Darjeeling Cafe Limited | Hospitality | 2019 |
| Red Door Property Sales Ltd | Real estate | 2023 |
| Red IP Limited | Wholesale & retail | 2006 |
| Red Sky Control Limited | Information & communication | 2012 |
| Red Sky Core Limited | Information & communication | 2012 |
| Redd Engineering Limited | Manufacturing | 2024 |
| Redecorating Ltd | Construction | 2024 |
| Redmira Limited | Construction | 2011 |
| Redrow (Sudbury) Limited | Construction | 2002 |
| Refrec Limited | Water & waste | 2018 |
| Refueled Group Ltd | Wholesale & retail | 2025 |
| Refueled Nutrition Ltd | Wholesale & retail | 2025 |
| Regal Developments (Buckley) Limited | Real estate | 2017 |
| Regal Developments (Pentre) Limited | Construction | 2019 |
| Regal Landmark Ltd | Construction | 2019 |
| Regal Property Developments Ltd | Construction | 2020 |
| Renewable Alternatives Limited | Professional & scientific | 2024 |
| Renoash Ltd | Construction | 2024 |
| Renshaw Projects Limited | Construction | 2018 |
| Research Information Limited | Information & communication | 1993 |
| Resus Positive Limited | Health & social care | 1993 |
| Resuscitation Consultancy Medical Services Limited | Health & social care | 2005 |
| Retail Planet Limited | Wholesale & retail | 2024 |
| Retail Restaurants Limited | Hospitality | 2017 |
| Retrospect Scaffolding Ltd | Construction | 2021 |
| Revive Your Furniture Ltd | Other services | 2018 |
| RGL Holdings Ltd | Professional & scientific | 2015 |
| Rhinopave Limited | Construction | 2016 |
| Richard Grace Cars Limited | Wholesale & retail | 2011 |
| RIS Consultation Ltd | Professional & scientific | 2024 |
| Rise Beyond Limits CIC | Education | 2026 |
| Ritson Lloyd Physiotherapy & Sports Medicine Ltd | Health & social care | 2022 |
| River Link Donkeys and Animal Sanctuary C.I.C. | Agriculture & fishing | 2021 |
| River View Management (Winsford) Limited | Extraterritorial | 2007 |
| Riverside Gravure Ltd | Manufacturing | 2008 |
| Riverside Gravure Security Limited | Manufacturing | 2025 |
| RJ Partners Ltd | Financial services | 2026 |
| RJ Windows & Doors Ltd | Construction | 2025 |
| RJM Electrical Contracting Ltd | Other services | 2024 |
| RK Interiors Limited | Manufacturing | 2016 |
| RLM Financials Ltd. | Administrative & support | 2014 |
| RM Consulting (Cymru) Limited | Information & communication | 2013 |
| RMJ Financial Services Limited | Financial services | 2020 |
| Robert D Sora Ltd | Information & communication | 2025 |
| Robert Holding Consultancy Limited | Information & communication | 2011 |
| Robert LIM Inventions Ltd | Professional & scientific | 2018 |
| ROBIN72 Ltd | Hospitality | 2025 |
| Rock and Rose Unisex Salon Limited | Other services | 2010 |
| Rollingstocktech Ltd | Manufacturing | 2021 |
| Rolo Invests Ltd | Real estate | 2025 |
| Root Source Limited | Wholesale & retail | 2012 |
| Ross Groves Lighting Ltd | Information & communication | 2022 |
| Rotax Razor Company Limited | Professional & scientific | 1939 |
| Roto Spiral (UK) Limited | Manufacturing | 2014 |
| Round Squares Studios Ltd | Information & communication | 2017 |
| RPW Developments Limited | Real estate | 2013 |
| RSN Logistics Ltd | Transport & logistics | 2026 |
| Rubicon Garden Rooms Limited | Construction | 2006 |
| Rubicon Manufacturing Limited | Administrative & support | 2015 |
| Ruby's Aircraft Painting Services Ltd | Manufacturing | 2025 |
| Russell IPM Ltd | Manufacturing | 1993 |
| Russell Realty Ltd | Real estate | 2018 |
| Rutter Commercial Truck Rental Ltd | Administrative & support | 2024 |
| Rutter Commercials Ltd | Wholesale & retail | 2020 |
| Ryder Landscape Consultants Limited | Professional & scientific | 2007 |
| Rylands FC Ltd | Arts & recreation | 2021 |
| S & GP Ltd | Other services | 2011 |
| S & R Pearson & Sons Ltd | Transport & logistics | 2019 |
| S B Prestige Limited | Wholesale & retail | 2014 |
| S C Logistics Ltd | Real estate | 2022 |
| S E Davies & Co Limited | Construction | 2006 |
| S Express Car Sales Ltd | Wholesale & retail | 2015 |
| S J Ward Electrical Ltd | Construction | 2025 |
| S K Jones General Building & Joinery Limited | Construction | 2022 |
| S Parkhill Scaffolding Limited | Construction | 2008 |
| S. L. Procurement Solutions Ltd | Professional & scientific | 2019 |
| Safer Surfacing Ltd | Manufacturing | 2012 |
| Saffron Deeside Ltd | Hospitality | 2026 |
| Sakeag Limited | Construction | 2007 |
| Saketa Limited | Information & communication | 2015 |
| Sala Boutique Ltd | Wholesale & retail | 2025 |
| Salus Gases Limited | Manufacturing | 2022 |
| Salvtech Limited | Manufacturing | 1999 |
| SAM CUT Ltd | Other services | 2025 |
| SAM Jones Property Investments Ltd | Real estate | 2025 |
| Sami(Uk) Ltd | Other services | 2019 |
| Sammys Car Limited | Wholesale & retail | 2016 |
| Sanctbastion Ltd | Information & communication | 2025 |
| SBP Holdings Limited | Professional & scientific | 1998 |
| SBR Property Limited | Real estate | 2020 |
| SBR Property Ventures Limited | Real estate | 2023 |
| Sbsp Services Limited | Professional & scientific | 2009 |
| Sc&Km Logistics Ltd | Transport & logistics | 2023 |