| Smith Family PUB Management Ltd | Hospitality | 2024 |
| Smith Home Socials Ltd | Other services | 2026 |
| Smith Hvac Limited | Construction | 2017 |
| Smith Metals (Bolton) Limited | Wholesale & retail | 2015 |
| Smith Way Properties Ltd | Real estate | 2021 |
| Smith-Jones-Buffey Limited | Health & social care | 2012 |
| Smitham Consulting Ltd | Hospitality | 2018 |
| Smitham Properties Limited | Real estate | 2017 |
| Smithbuild North West Limited | Construction | 2011 |
| Smithills Glade (Bolton) Management Limited | Households | 2011 |
| Smithills Holdings Limited | Construction | 2011 |
| Smithills Open Farm Ltd | Agriculture & fishing | 2015 |
| Smithills Project Management Consultancy Limited | Professional & scientific | 2025 |
| Smithills PUB Co Ltd | Hospitality | 2024 |
| Smiths 360 Ltd | Wholesale & retail | 2022 |
| Smiths Auto Group Limited | Wholesale & retail | 2025 |
| Smiths Bakers & Confectioners Limited | Hospitality | 2015 |
| Smiths Service Garage (Bolton) Limited | Wholesale & retail | 2003 |
| Smithwood Developments Limited | Professional & scientific | 2003 |
| Smittens Pet Supplies Ltd | Wholesale & retail | 2024 |
| SMK Direct Limited | Wholesale & retail | 2025 |
| SMK Tech Ltd | Wholesale & retail | 2023 |
| Smkt Consulting Limited | Information & communication | 2014 |
| SMM Home Improvements Ltd | Real estate | 2026 |
| Smmip Ltd | Construction | 2023 |
| Smmkn Ltd | Wholesale & retail | 2025 |
| Smof Ltd | Administrative & support | 2024 |
| Smoke & Chrome Ltd | Manufacturing | 2025 |
| Smokersexit Ltd | Wholesale & retail | 2012 |
| Smokies Ince Ltd | Hospitality | 2025 |
| Smoo Ltd | Wholesale & retail | 2025 |
| Smooth Brains Ltd | Information & communication | 2021 |
| Smous Investments (PTY) Limited | Wholesale & retail | 2025 |
| SMP (North West) Limited | Real estate | 2002 |
| SMP Bargains Ltd | Wholesale & retail | 2024 |
| Smph Beauty and Tattooing Ltd | Other services | 2026 |
| SMR Renovations and Rentals Ltd | Real estate | 2022 |
| SMR Transport Ltd | Transport & logistics | 2022 |
| Smruti Properties Ltd | Real estate | 2025 |
| SMS & Sons Investments Ltd | Financial services | 2020 |
| SMS & Sons Retail (Little Lever) Ltd | Wholesale & retail | 2024 |
| SMS & Sons Retail (Newbury) Ltd | Wholesale & retail | 2024 |
| SMS & Sons Retail (Salford) Ltd | Wholesale & retail | 2022 |
| SMS & Sons Retail (Welcome Store) Ltd | Wholesale & retail | 2023 |
| SMS & Sons Retail Ltd | Wholesale & retail | 2020 |
| SMS Architecture Ltd | Professional & scientific | 2026 |
| SMS Build Limited | Construction | 2016 |
| SMS Renovations & Rentals Limited | Real estate | 2020 |
| SMS Village Store Ainsworth Ltd | Wholesale & retail | 2024 |
| SMY Ltd | Other services | 2015 |
| SN Process Ltd | Professional & scientific | 2020 |
| SN420 Ltd | Financial services | 2023 |
| SNA Investment Group Ltd | Real estate | 2023 |
| SNA Transport and Logistics Ltd | Transport & logistics | 2023 |
| Snakestationuk Ltd | Agriculture & fishing | 2023 |
| Snap Growth Limited | Financial services | 2024 |
| Snap My Selfie Photobooth Limited | Professional & scientific | 2018 |
| Snap Savings Ltd | Wholesale & retail | 2024 |
| Snap Shipped Ltd | Wholesale & retail | 2025 |
| Snappify Ltd | Wholesale & retail | 2025 |
| Snappymart Limited | Wholesale & retail | 2025 |
| Snbc Group Ltd | Wholesale & retail | 2015 |
| Sncanlineservices Ltd | Construction | 2025 |
| SND Bolton Ltd | Professional & scientific | 2026 |
| SND Holding Group Ltd | Financial services | 2026 |
| Snda Ltd | Professional & scientific | 2016 |
| Sneakercanvas Ltd | Wholesale & retail | 2022 |
| Sneakspot Ltd | Wholesale & retail | 2024 |
| Sniper Transport Services Ltd | Transport & logistics | 2023 |
| SNJ Joinery & Maintenance Ltd | Construction | 2020 |
| SNK Systems Limited | Information & communication | 2025 |
| SNM Legal Limited | Professional & scientific | 2024 |
| Snooboos Ltd | Health & social care | 2018 |
| Snoop Dog Ltd | Transport & logistics | 2026 |
| Snowlilley Marketing Ltd | Professional & scientific | 2014 |
| Snowstech Ltd | Information & communication | 2025 |
| SNS Healthcare Services Ltd | Administrative & support | 2016 |
| SNS Performance Ltd | Wholesale & retail | 2023 |
| Snug (NW) Limited | Construction | 2000 |
| Snug Roofing Systems Ltd | Construction | 2020 |
| Snyland Ltd | Information & communication | 2020 |
| SO Fresh Barber Limited | Other services | 2024 |
| SO Fresh N SO Clean Carpets Ltd | Administrative & support | 2025 |
| SO Pharma Ltd | Health & social care | 2025 |
| SO Sublime Massage UK Limited | Arts & recreation | 2024 |
| Soapnscent Limited | Manufacturing | 2021 |
| Soar Clothing Ltd | Manufacturing | 2018 |
| Sobia Optics Ltd | Health & social care | 2024 |
| Sobo Property Limited | Real estate | 2024 |
| Sobrero Languages Ltd | Professional & scientific | 2012 |
| Social Care Connect Ltd | Real estate | 2021 |
| Social Dance Tech Ltd | Wholesale & retail | 2025 |
| Social Studios Ltd | Professional & scientific | 2020 |
| Social Vault Limited | Professional & scientific | 2024 |
| Socialeyes Intl Ltd | Professional & scientific | 2023 |
| Socierge Ltd | Administrative & support | 2021 |
| Society of Practising Accountants Ltd | Other services | 2001 |
| Socio Zoom Limited | Extraterritorial | 2014 |
| Sofasway Ltd | Wholesale & retail | 2023 |
| Sofia Audiologists Ltd | Health & social care | 2023 |