| R & S Hill Limited | Information & communication | 1989 |
| R C Courier Services Ltd | Transport & logistics | 2024 |
| R G Piling Hammers Limited | Extraterritorial | 2016 |
| R K Fire Limited | Professional & scientific | 2021 |
| R&R Business Solutions Limited | Professional & scientific | 2007 |
| R&S Engineering Ltd | Professional & scientific | 2025 |
| R.I.O Elite Construction Ltd | Construction | 2026 |
| R.K. Engineering (Atherstone) Limited | Manufacturing | 2009 |
| RAJ Mahal Indian Cuisine Ltd | Hospitality | 2011 |
| Ratcliffe Farms Limited | Agriculture & fishing | 1965 |
| Ratcliffe Road Sports | Arts & recreation | 2010 |
| Ratcliffe Service Station (Atherstone) Ltd | Wholesale & retail | 2019 |
| Rayandbigbad Ltd | Other services | 2022 |
| Raymond James Caravans Limited | Wholesale & retail | 1947 |
| RBG Logistics Ltd | Transport & logistics | 2018 |
| RCH Training Limited | Education | 2018 |
| RCS Plants Ltd | Agriculture & fishing | 2016 |
| Really Useful Engines Limited | Administrative & support | 2025 |
| Reclaiming Wellbeing CIC | Education | 2024 |
| Recovered Ltd | Education | 2023 |
| Red Lion Court (Pinwall) Management Limited | Households | 2021 |
| Reilly's Stoves Limited | Wholesale & retail | 2017 |
| Resolve Properties Ltd | Real estate | 2021 |
| Reville Plumbing and Heating Ltd | Construction | 2026 |
| Rewilduk Ltd | Professional & scientific | 2025 |
| Reworkit Limited | Information & communication | 2026 |
| RF IT Consultants Limited | Information & communication | 2006 |
| RHL Estates Ltd | Extraterritorial | 2019 |
| Riverside MC Properties Ltd | Households | 2025 |
| Riverspirit Ltd | Other services | 2019 |
| Roboswift Logistics Ltd | Transport & logistics | 2025 |
| Roger Freeman & Sons Limited | Transport & logistics | 2010 |
| Roofers Warehouse Limited | Construction | 2018 |
| Rooster Homes Ltd | Real estate | 2025 |
| Rose Farm Services Ltd | Manufacturing | 2020 |
| Rothen Ecology Limited | Professional & scientific | 2016 |
| ROX Commercial Properties Ltd | Administrative & support | 2019 |
| RP Consultants (Midlands) Limited | Professional & scientific | 2011 |
| Rs&Sf Enginering Ltd | Professional & scientific | 2025 |
| Ruby's Yard CIC | Arts & recreation | 2016 |
| RWI Properties Ltd | Real estate | 2021 |
| S Lane Construction Contracts Ltd | Construction | 2026 |
| S&S UK Holdings Limited | Financial services | 2025 |
| S.I.B. Software Limited | Information & communication | 2003 |
| Safey Glass & Windows Ltd | Construction | 2019 |
| SAH Developments & Sons Ltd | Construction | 2004 |
| Salinger Reed Limited | Real estate | 2018 |
| Sally Konadu Limited | Public administration | 2024 |
| SAM Morris 2025 UK Limited | Professional & scientific | 2025 |
| Samuk Lift Trucks Limited | Extraterritorial | 2013 |
| Sardar Aman Boss Limited | Wholesale & retail | 2025 |
| Saxon Knight Properties Limited | Real estate | 2024 |
| SB Construction Midlands Ltd | Construction | 2024 |
| SB Mechanical Services Ltd | Construction | 2016 |
| Sc-Rubs Modelling UK Ltd | Information & communication | 2025 |
| Scaffolding Maintenance Services Limited | Other services | 2020 |
| Screatons Ltd | Professional & scientific | 2009 |
| SDM Building Consultancy Services Ltd | Construction | 2012 |
| Secureacloud Limited | Information & communication | 2018 |
| Sell Action Limited | Wholesale & retail | 2020 |
| Senopsis Limited | Professional & scientific | 2024 |
| Sentrical Limited | Information & communication | 2015 |
| SFP Consultant Ltd | Professional & scientific | 2025 |
| Sheepy Farm Services Limited | Wholesale & retail | 1977 |
| Sheepy Mill Management Limited | Real estate | 1998 |
| Sheepy Services Ltd | Professional & scientific | 2026 |
| Shgs Services Limited | Administrative & support | 2018 |
| Shield Waterproofing and Preservation Ltd | Construction | 2023 |
| Siblin Personal Training Ltd | Arts & recreation | 2020 |
| Sign FX Limited | Construction | 2009 |
| Signal Securities Limited | Administrative & support | 2001 |
| Silverlake Country Taverns Ltd | Hospitality | 2025 |
| Simba Warwickshire Limited | Real estate | 2024 |
| Sime Catering Equipment Limited | Manufacturing | 2009 |
| Sincere Financial Planning Ltd | Professional & scientific | 2020 |
| SJT Driving Agency Limited | Other services | 2005 |
| Skull Cushion Ltd | Manufacturing | 2017 |
| Sky Bagel Ltd | Information & communication | 2014 |
| Slemcka (DMS) Limited | Wholesale & retail | 1977 |
| Slva Ltd | Wholesale & retail | 2025 |
| Smith Brothers (Tamworth) Developments Limited | Real estate | 1962 |
| Smith Brothers (Tamworth) Limited | Administrative & support | 1997 |
| Snackables Limited | Manufacturing | 2022 |
| SNM Driving Services Ltd | Transport & logistics | 2017 |
| Sofia's Italian Delicatessen LP | | 2025 |
| Solax Power UK Limited | Wholesale & retail | 2018 |
| Sonder Group Holdings Ltd | Professional & scientific | 2025 |
| Soni & Singh Holdings Limited | Real estate | 2016 |
| Sophitex Trading Limited | Wholesale & retail | 2020 |
| SOS Installations Ltd | Administrative & support | 2018 |
| Southerd Design Limited | Professional & scientific | 2016 |
| Spamate Ltd | Extraterritorial | 2025 |
| Specialist Hire Properties Limited | Financial services | 2016 |
| Spice Inn Atherstone T/A Herbs & Spices Ltd | Hospitality | 2020 |
| Splitdrinks Ltd | Hospitality | 2018 |
| Spokes Renovations Limited | Construction | 2025 |
| Sportique Limited | Manufacturing | 2002 |
| SRK ENG Services Ltd | Administrative & support | 2011 |
| SRN Investments Limited | Financial services | 2025 |
| SSS Heating & Plumbing Ltd | Manufacturing | 2015 |