| Relational Partnering Limited | Professional & scientific | 2022 |
| Relationalism Limited | Professional & scientific | 2023 |
| Relationalopoly Limited | Professional & scientific | 2022 |
| Relationism Limited | Professional & scientific | 2023 |
| Releasing Potential Limited | Education | 2002 |
| Renee Fish & Chips Ltd | Real estate | 2024 |
| Renee's Fish and Chips Limited | Real estate | 2024 |
| Renewables Energy Imports Limited | Other services | 2023 |
| Renewables Warranty UK Limited | Financial services | 2022 |
| Renoraffle Ltd | Wholesale & retail | 2026 |
| Renovare Wellness Ltd | Health & social care | 2021 |
| Rent-A-Robot Ltd | Administrative & support | 2023 |
| Resolut Marketing Ltd | Professional & scientific | 2018 |
| Resolute Asbestos Solutions Limited | Professional & scientific | 2025 |
| Revelation Property Ltd. | Real estate | 2015 |
| Revision Mentor Ltd | Education | 2020 |
| Revive Spaces Southern Ltd | Manufacturing | 2026 |
| RGBI100 Ltd | Manufacturing | 2025 |
| RGL Construction Consultancies Ltd | Construction | 2026 |
| Richard Mitham Associates Commercial Limited | Real estate | 2020 |
| Rishi Stores Ltd | Wholesale & retail | 2013 |
| River & RO Ltd | Wholesale & retail | 2025 |
| RJL Property Southern Ltd | Real estate | 2024 |
| RM Plastering Limited | Construction | 2016 |
| RM Windows Ltd | Construction | 2021 |
| RMD Electrical and Renewables Ltd | Construction | 2023 |
| Roberts Financial Services Limited | Financial services | 2002 |
| Robinson Eco Roofing Limited | Construction | 2025 |
| Robinson Hard Metals Limited | Construction | 2025 |
| Robinson Heritage Limited | Construction | 2025 |
| Robinson Roofing Group Limited | Construction | 2024 |
| Romans Building Consultancy Ltd | Professional & scientific | 2023 |
| Ropagolf Ltd | Wholesale & retail | 2026 |
| Rose Cafe Havant Ltd | Hospitality | 2024 |
| Rose Leaf Sweet Treats Ltd | Manufacturing | 2025 |
| Rosie Nails 15 Ltd | Other services | 2023 |
| Round Robin Ltd | Hospitality | 2018 |
| Rovara Ltd | Administrative & support | 2026 |
| Rowland Way Limited | Manufacturing | 1974 |
| RR Mortgage Solutions Ltd | Financial services | 2023 |
| RS Interior Contractors Limited | Construction | 2012 |
| RS Pest Control Ltd. | Agriculture & fishing | 2019 |
| RS Project Management Limited | Construction | 2005 |
| Rynovate Roofing Ltd | Construction | 2024 |
| S & R Holdings a Caffrey Company Ltd | Real estate | 2025 |
| S J Aviation Limited | Transport & logistics | 2011 |
| S K Timbers Ltd | Wholesale & retail | 2005 |
| S Matthews (South) Ltd | Construction | 2015 |
| S&K Bathrooms Ltd | Construction | 2016 |
| S.D Bennett Services Ltd | Other services | 2018 |
| S.H.Young & SON Limited | Agriculture & fishing | 1958 |
| Saacke Combustion Services Ltd | Other services | 2010 |
| Saacke Eurotherm Limited | Manufacturing | 1962 |
| Saacke Limited | Extraterritorial | 2016 |
| Safe & Secure Fire Security Limited | Other services | 2018 |
| Safe Hands Haulage Limited | Transport & logistics | 2013 |
| Safe Scaffolding Erectors Limited | Construction | 2019 |
| Safetread Ltd | Wholesale & retail | 2025 |
| Sage & Skin Ltd | Health & social care | 2026 |
| Salon Dolly Ltd | Other services | 2021 |
| Salus Mortgages Ltd | Financial services | 2025 |
| SAM Pearson Production Ltd | Arts & recreation | 2023 |
| Samuel's Rest (Shedfield) Ltd | Hospitality | 2018 |
| SAMZ1UK Limited | Information & communication | 2020 |
| Sanjay Patel Legal Services Limited | Professional & scientific | 2020 |
| SAQ Administrative Services Limited | Information & communication | 1998 |
| SAQ Ltd | Information & communication | 2008 |
| SAU Co (Havant) Ltd | Hospitality | 2021 |
| Scaffold Services Globally Ltd | Construction | 2024 |
| Scanjunki Ltd | Information & communication | 2026 |
| SDB Mortgages Ltd | Financial services | 2021 |
| Sea Scorpion Systems Limited | Professional & scientific | 2009 |
| Seaborne Chiropractic Ltd | Health & social care | 2026 |
| Season Electronics Limited | Manufacturing | 1989 |
| Secured Ltd | Administrative & support | 2022 |
| SEE YOU Laser Ltd | Other services | 2023 |
| Seek and Supply Ltd | Wholesale & retail | 2025 |
| Seeley Construction Ltd | Construction | 2015 |
| Semtec Ltd | Information & communication | 2008 |
| Senator Press Limited | Manufacturing | 1996 |
| Sensoryvroom Ltd | Health & social care | 2026 |
| Sentaur Security Services Ltd | Administrative & support | 2023 |
| Sentinel Security and Consultancy Services Limited | Administrative & support | 2020 |
| Sermiro Catering Ltd | Hospitality | 2022 |
| Sevcom Ltd | Real estate | 2016 |
| Sextons Interiors Limited | Construction | 2021 |
| SF Paraplanning Ltd | Administrative & support | 2025 |
| Shakesbars Ltd | Hospitality | 2025 |
| Shakhawan Ltd | Hospitality | 2019 |
| Shana KAY Aesthetics Ltd | Other services | 2025 |
| Shane-O Entertainment Ltd | Information & communication | 2023 |
| Shannon Happy Tails Ltd | Other services | 2026 |
| Shanton Carpentry Limited | Manufacturing | 2026 |
| Sharewood Florist Ltd | Other services | 2022 |
| Sharps Decorators Ltd | Construction | 2026 |
| Shergold & Stewart Carpentry and Refurbishments Ltd | Construction | 2012 |
| SHH Rail Ltd | Construction | 2025 |
| Shiers Property Services Ltd | Construction | 2025 |
| Shift Smart Driving Ltd | Education | 2025 |
| Shine Networks Limited | Information & communication | 2015 |