| Sucu Trans Ltd | Transport & logistics | 2024 |
| Sugar Rush (Rochdale) Ltd | Hospitality | 2018 |
| Suites Hull Ltd | Real estate | 2016 |
| Suitstech Consultancy Limited | Information & communication | 2026 |
| Sulaiman & Co Solicitors Limited | Professional & scientific | 2024 |
| Sulaimany Mini Market Ltd | Wholesale & retail | 2025 |
| Suleman Property Co Limited | Real estate | 2020 |
| Sulfrock Ltd | Wholesale & retail | 2023 |
| Summers Garage Equipment Ltd | Wholesale & retail | 2023 |
| Summit Crest Ltd | Professional & scientific | 2018 |
| Summit Financial Solutions Group Ltd | Professional & scientific | 2025 |
| Sumza Design Limited | Professional & scientific | 2016 |
| Sun Interiors Ltd | Construction | 2019 |
| Sun Power Logistics Ltd | Transport & logistics | 2022 |
| Sun Property Services Ltd | Real estate | 2025 |
| Sun Rising UK Trading Ltd | Wholesale & retail | 2025 |
| Sunderland and Wild Screenprints Limited | Real estate | 1986 |
| Sunlit Travel Limited | Administrative & support | 2025 |
| Sunny Car Hire Ltd | Administrative & support | 2024 |
| Sunshine Care (Rochdale) C.I.C | Health & social care | 2009 |
| Sunshine Properties Rochdale Ltd | Real estate | 2014 |
| Sunshine Snacks Limited | Wholesale & retail | 2003 |
| Sunshinebusinesses Ltd | Wholesale & retail | 2021 |
| Super Electronics Ltd | Wholesale & retail | 2025 |
| Super Savers Local Ltd | Wholesale & retail | 2025 |
| Super Shine Hand Car Wash Middleton Ltd | Administrative & support | 2023 |
| Superide Limited | Extraterritorial | 2016 |
| Superior Health & Wellness Ltd | Education | 2025 |
| Supermarkets Ltd | Professional & scientific | 2004 |
| Supersonic Sawmill Ltd | Manufacturing | 2020 |
| Supertots Day Nurseries Limited | Health & social care | 1992 |
| Support IT Technical Solutions Ltd | Information & communication | 2020 |
| Supporting Inspiration Ltd | Information & communication | 2020 |
| Supreme BED Linen Limited | Wholesale & retail | 1998 |
| Sura Ltd | Wholesale & retail | 2023 |
| Sure IT Fixed Ltd | Construction | 2024 |
| Sure Move Estates Ltd | Real estate | 2019 |
| Sure Movers Ltd | Transport & logistics | 2023 |
| SURE4ORM Contracts Limited | Construction | 2009 |
| Surfsear Limited | Wholesale & retail | 2024 |
| Surgequip Ltd | Professional & scientific | 2011 |
| Surgical Excellence Clinic Limited | Health & social care | 2017 |
| Surgical Research Society | Other services | 1992 |
| Surrati Perfume Ltd | Wholesale & retail | 2024 |
| Surya Empowerment Movement CIC | Education | 2026 |
| Susie Q'S Ltd | Hospitality | 2021 |
| Suveda Group Ltd | Wholesale & retail | 2022 |
| Suxex Innovations Enterprise Ltd | Wholesale & retail | 2024 |
| Suzanne Truelove BSL Interpreting Services Ltd | Professional & scientific | 2018 |
| SW Electrical Installations Ltd | Construction | 2023 |
| SW Medical and Legal Limited | Professional & scientific | 2019 |
| SW Property Holdings Ltd | Real estate | 2021 |
| SW Shop Ltd | Wholesale & retail | 2019 |
| Swamp Ltd | Professional & scientific | 2019 |
| Swan Opulence Ltd | Wholesale & retail | 2023 |
| Swankyswans Limited | Administrative & support | 2012 |
| Swans Hub CIC | Hospitality | 2025 |
| Swedish Truck Parts Limited | Wholesale & retail | 2005 |
| Sweet Briars Homes Ltd | Construction | 2020 |
| Sweet Cloudz Ltd | Wholesale & retail | 2023 |
| Sweet Stop Newbold Ltd | Hospitality | 2025 |
| Sweet Stop Rochdale Ltd | Hospitality | 2019 |
| Sweet Touch Services UK Limited | Health & social care | 2018 |
| Sweet UK Homes Ltd | Real estate | 2024 |
| Sweet Vape PVT Ltd | Wholesale & retail | 2025 |
| Sweets and Bakers Ltd | Hospitality | 2022 |
| Swift Accident Hire Ltd | Administrative & support | 2018 |
| Swift Auto Solutions Limited | Wholesale & retail | 2025 |
| Swift Clean Logistics Ltd | Transport & logistics | 2025 |
| Swift Consulting Ltd | Transport & logistics | 2025 |
| Swift Laser Limited | Manufacturing | 2025 |
| Swift Line Travels Ltd | Transport & logistics | 2025 |
| Swift Mortgages Ltd | Financial services | 2017 |
| Swift Security Products Ltd | Manufacturing | 2010 |
| Swift Surgical Limited | Health & social care | 2021 |
| Swiftsaleone Ltd | Real estate | 2026 |
| Switchgear Integrated Maintenance Ltd | Extraterritorial | 2019 |
| SWITCHIT4U Limited | Real estate | 2006 |
| Swordfish International Trade Ltd | Wholesale & retail | 2023 |
| SY Customs Ltd | Wholesale & retail | 2022 |
| Sybray Ltd | Professional & scientific | 2026 |
| Syed Afzal Ltd | Health & social care | 2019 |
| Syed Bros Ltd | Transport & logistics | 2025 |
| Sygna Scents Ltd | Manufacturing | 2025 |
| Sync Network Roleplay Ltd | Information & communication | 2025 |
| Synergy Roofline Ltd. | Construction | 2019 |
| Synerlogix Solutions Ltd | Professional & scientific | 2024 |
| Syvester.O.J.P.O.Ugiagbe Ltd | Health & social care | 2024 |
| Syza Holdings Ltd | Financial services | 2020 |
| T & a Traders Limited | Wholesale & retail | 2016 |
| T & H Motor Repairs Ltd | Wholesale & retail | 2013 |
| T & P Williams Limited | Wholesale & retail | 2004 |
| T & S Developers Ltd | Construction | 2019 |
| T & S Products Limited | Other services | 2015 |
| T - Mospe Limited | Information & communication | 2019 |
| T Betts Limited | Financial services | 2025 |
| T C Contract Services Ltd | Administrative & support | 2020 |
| T C Tree Services Ltd | Administrative & support | 2021 |
| T Conway Electrical Ltd | Energy | 2018 |
| T D H Developments UK Limited | Construction | 2009 |