| Springfield Flats (13-21) Residents Limited | Households | 1985 |
| Springfield Management Limited | Households | 1992 |
| Springfield Pastures Management Company Limited | Households | 2015 |
| Springfield Premier Investigations Limited | Administrative & support | 2013 |
| Springfield Properties (Preston) Limited | Construction | 2019 |
| Springfield Properties Nottingham Limited | Real estate | 2022 |
| Springfields Hucknall Management Company Ltd. | Households | 2007 |
| Springform Technology Limited | Manufacturing | 1993 |
| Springmount Notts Ltd | Construction | 2023 |
| Springrisesolutions Limited | Real estate | 2024 |
| Springs of Joy Care Solution (SOJ) C.I.C. | Health & social care | 2013 |
| Springs of Joy Care Solution Limited | Administrative & support | 2016 |
| Springwater Software Ltd. | Information & communication | 1990 |
| Springwood Residential Home Limited | Health & social care | 1996 |
| Springwood Vehicles Ltd | Wholesale & retail | 2023 |
| Sprinkle With Pixie Dust Limited | Manufacturing | 2022 |
| Sprint Dampers UK Limited | Wholesale & retail | 2000 |
| Sprintline Despatch Ltd | Transport & logistics | 2019 |
| Spritely Sustainable C.I.C. | Education | 2022 |
| Sprs 10821 Limited | Health & social care | 2021 |
| SPS & SON Property Maintenance LLP | | 2011 |
| SPS Build and Roof Limited | Construction | 2009 |
| SPS Holdings (Midlands) Ltd | Financial services | 2024 |
| SPS Properties (Midlands) Limited | Real estate | 2017 |
| SPS Refrigeration Ltd | Manufacturing | 2019 |
| Spsd Ltd | Transport & logistics | 2019 |
| Spss Holdings Limited | Financial services | 2025 |
| Sptg Limited | Other services | 2023 |
| Spudtastiq Ltd | Hospitality | 2026 |
| Spudz 2 Ltd | Hospitality | 2025 |
| Spudz 3 Ltd | Other services | 2024 |
| Spudz 4 Ltd | Hospitality | 2025 |
| Spudz 5 Ltd | Hospitality | 2025 |
| Spudz 6 Ltd | Hospitality | 2025 |
| Spudz 7 Ltd | Hospitality | 2025 |
| Spudz 8 Ltd | Hospitality | 2025 |
| Spudz 9 Ltd | Hospitality | 2025 |
| Spuk Limited | Manufacturing | 2010 |
| Spunji-I Limited | Manufacturing | 2014 |
| Spurk Golf Limited | Manufacturing | 2017 |
| SPV Properties Ltd | Construction | 2017 |
| SPX Healthcare Solutions Ltd | Administrative & support | 2023 |
| SPX Limited | Wholesale & retail | 2004 |
| SPY Detector Ltd | Administrative & support | 2018 |
| Spyder Infinity Limited | Information & communication | 2014 |
| SQ & TM Consultancy Ltd | Health & social care | 2024 |
| SQ2 Management Company Limited | Households | 2007 |
| SQE Solar Quality Experts Ltd | Construction | 2025 |
| SQP International Limited | Manufacturing | 1973 |
| SQP Properties Ltd | Real estate | 2025 |
| Squaddies Retreat Radio Ltd | Information & communication | 2024 |
| Squadmind Marketing Ltd | Wholesale & retail | 2021 |
| Square Bell Limited | Information & communication | 2010 |
| Square Burgers Limited | Hospitality | 2022 |
| Square Burgers Management Services Limited | Administrative & support | 2024 |
| Square Burgers North Limited | Hospitality | 2025 |
| Square Burgers Trading Limited | Wholesale & retail | 2024 |
| Square One Estates Limited | Real estate | 2018 |
| Square Pears Ltd | Information & communication | 2024 |
| Square PEG Media Ltd | Information & communication | 2024 |
| Square Root Design Studio Limited | Information & communication | 2015 |
| Squarefish Design Limited | Professional & scientific | 2004 |
| Squark Design Ltd | Professional & scientific | 2014 |
| Squawk Point Ltd | Professional & scientific | 2022 |
| Squeaky Bean Limited | Professional & scientific | 2007 |
| Squid Architects Limited | Professional & scientific | 2019 |
| Squid Movers Logistics Ltd | Transport & logistics | 2025 |
| Squidge Productions Ltd | Information & communication | 2023 |
| Squiggles Playden Ltd | Arts & recreation | 2017 |
| Squire Family Homes Ltd | Real estate | 2022 |
| Squires Serviced Accommodation Ltd | Hospitality | 2023 |
| Sqyholdings Ltd | Financial services | 2025 |
| SR Decor Limited | Construction | 2006 |
| SR Group Consultants Ltd | Professional & scientific | 2023 |
| SR Medical Reporting Limited | Health & social care | 2010 |
| SR Services (ENG) Ltd | Administrative & support | 2025 |
| SR Thompson Limited | Professional & scientific | 2014 |
| SR TKD LLP | | 2017 |
| SR1 Property Investments Ltd | Real estate | 2026 |
| SR5 Consulting Limited | Professional & scientific | 2025 |
| SR7 Holdings Limited | Real estate | 2001 |
| SR7 Properties Limited | Real estate | 2015 |
| SRA (Nottm) Ltd | Real estate | 2023 |
| SRA Advisor Limited | Professional & scientific | 2020 |
| SRA Balaji Ltd | Real estate | 2022 |
| SRB Crystal Ltd | Professional & scientific | 2013 |
| SRG Strategy Ltd | Professional & scientific | 2023 |
| SRH Building & Landscaping Limited | Administrative & support | 2024 |
| SRH Cars Ltd | Wholesale & retail | 2022 |
| SRH Motors Ltd | Wholesale & retail | 2025 |
| SRI Guru Ganesh Consultancy UK Ltd | Professional & scientific | 2016 |
| SRI Mahalakshmi Limited | Health & social care | 2019 |
| SRI SAI Gankar Properties Ltd | Real estate | 2024 |
| SRI SAI Gankar Solutions Limited | Information & communication | 2017 |
| SRI Valli Garages Ltd | Wholesale & retail | 2019 |
| SRI Valli Homes Ltd | Real estate | 2023 |
| SRI Varadhi Estate Limited | Real estate | 2024 |
| SRI Vasudha Ltd | Real estate | 2021 |
| Srinagar Medical Network Limited | Health & social care | 2023 |
| Sriram Limited | Wholesale & retail | 2026 |