| Sancorp Limited | Manufacturing | 2014 |
| Sanctuary Bathrooms (London) Limited | Wholesale & retail | 2020 |
| Sanctuary Bathrooms Holdings Limited | Financial services | 2026 |
| Sanctuary Bathrooms Leeds Limited | Wholesale & retail | 2011 |
| Sanctuary Finance (Holdings)) Limited | Financial services | 2026 |
| Sanctuary Finance (SA) Limited | Administrative & support | 2026 |
| Sanctuary Finance (SM) Limited | Administrative & support | 2026 |
| Sanctuary Finance Limited | Administrative & support | 2012 |
| Sanctuary Ranch Ltd | Agriculture & fishing | 2024 |
| Sanctuary Tribe Ltd | Administrative & support | 2025 |
| Sandal Financial Services Limited | Financial services | 2022 |
| Sandalwood Fold Management Company Limited | Households | 1991 |
| Sandbox Limited | Information & communication | 2014 |
| Sandby (York) Limited | Construction | 2011 |
| Sandby Limited | Construction | 2015 |
| Sanddancer Leisure Ltd | Hospitality | 2020 |
| Sanddtaverns Ltd | Hospitality | 2025 |
| Sandeep Properties Ltd | Real estate | 2018 |
| Sanders & Fink Limited | Wholesale & retail | 2011 |
| Sanderson Coleman Limited | Real estate | 2018 |
| Sanderson House Limited | Professional & scientific | 1994 |
| Sanderson Townend & Gilbert (Residential) Limited | Professional & scientific | 1994 |
| Sanderson Townend & Gilbert Limited | Real estate | 2001 |
| Sanderson Townend Limited | Professional & scientific | 1994 |
| Sanderson Weatherall Group Limited | Real estate | 2003 |
| Sanderson Weatherall LLP | | 2009 |
| Sanderson Weatherall Management Limited | Real estate | 2003 |
| Sandgate Day Care Centre Ltd | Other services | 2021 |
| Sandham Brothers Equipment Hire Limited | Administrative & support | 2017 |
| Sandhill (Bullion) Limited | Administrative & support | 1974 |
| Sandhill Lawns Management Company Limited | Households | 1988 |
| Sandhu Home Improvement Ltd | Construction | 2020 |
| Sandhurst Leisure Limited | Hospitality | 2010 |
| Sandhurst Park Flat Management Company (4) Limited | Households | 1984 |
| Sandiford Limited | Professional & scientific | 2022 |
| Sandinista Limited | Hospitality | 2004 |
| Sandiway Developments Limited | Construction | 2014 |
| Sandle Bros Ltd | Professional & scientific | 2022 |
| Sandle Trading Limited | Wholesale & retail | 2025 |
| Sandlewood Park Limited | Real estate | 2009 |
| Sandm Fuel Ltd | Wholesale & retail | 2024 |
| Sandmoor Chase Flats Limited | Households | 1973 |
| Sandmoor Developments Limited | Real estate | 2019 |
| Sandmoor Gate (Management Company) Limited | Households | 2014 |
| Sandmoor Green (Management) Limited | Households | 1979 |
| Sandmoor Group Ltd | Real estate | 2022 |
| Sandmoor Holdings Limited | Professional & scientific | 2012 |
| Sandmoor Homes Ltd | Real estate | 2026 |
| Sandmoor Investment | Financial services | 2024 |
| Sandmoor Lane Flats Limited | Households | 1971 |
| Sandmoor Properties Limited | Real estate | 2012 |
| Sandmoor View Limited | Households | 2022 |
| Sandnord Ltd | Administrative & support | 2023 |
| Sandook Collective Limited | Wholesale & retail | 2025 |
| Sandor a Delivery Ltd | Transport & logistics | 2023 |
| Sandpiper Homes Limited | Real estate | 2022 |
| Sandra Coen Limited | Information & communication | 2016 |
| Sandrino Continental Ltd | Hospitality | 2020 |
| Sandroy Retail Limited | Wholesale & retail | 2015 |
| Sandstone Legal Limited | Professional & scientific | 2017 |
| Sandstone Talent Solutions Ltd | Administrative & support | 2023 |
| Sandstorm Ltd | Real estate | 2019 |
| Sandwell Futures Limited | Administrative & support | 2009 |
| Sandwich Glue Ltd | Manufacturing | 2025 |
| Sandy Bottoms Ltd | Real estate | 2019 |
| Sandy Lanes Stores Limited | Wholesale & retail | 2011 |
| Sandy Toes Cottage Ltd | Real estate | 2021 |
| Sandz Convenience Stores Ltd | Wholesale & retail | 2023 |
| Sandz Properties Ltd | Other services | 2019 |
| Sandz Retail Ltd | Wholesale & retail | 2019 |
| Sanford Deland Asset Management Ltd | Administrative & support | 2010 |
| Sangiovanni Partners Ltd | Real estate | 2018 |
| Sanish Properties Ltd | Real estate | 2026 |
| Sanjabs Technical Solutions Limited | Manufacturing | 2021 |
| Sanjeevani Associates Limited | Health & social care | 2010 |
| Sankara Enterprises Ltd | Transport & logistics | 2022 |
| Sankey Laminations Limited | Manufacturing | 1949 |
| Sankofa Properties Ltd | Real estate | 2023 |
| Sansen Network Limited | Health & social care | 2025 |
| Sanskaar Limited | Wholesale & retail | 2026 |
| Sanskar Retail Ltd | Wholesale & retail | 2023 |
| Santana Russell Consultancy Limited | Administrative & support | 2012 |
| Santavia Headspa Ltd | Other services | 2025 |
| Sante Studios Leeds Ltd | Arts & recreation | 2026 |
| Santino Takeaway (Yorkshire) Ltd | Hospitality | 2023 |
| Santis Collections Ltd | Wholesale & retail | 2019 |
| Santos Brothers & Mendonca Limited | Wholesale & retail | 2020 |
| Santosh Malviya & Son's Ltd | Wholesale & retail | 2026 |
| Sanyan Limited | Wholesale & retail | 2023 |
| Sanz Property Ltd | Real estate | 2019 |
| SAP Design Limited | Professional & scientific | 2025 |
| Sapec Limited | Construction | 2002 |
| Saphaus Ltd | Health & social care | 2025 |
| Sapiente Ltd | Professional & scientific | 2019 |
| Sapientia Systems Ltd | Information & communication | 2018 |
| Sapiyo Ltd | Wholesale & retail | 2025 |
| Sapna Gadaria Counselling Services Ltd | Professional & scientific | 2011 |
| Sapori (74) Ltd | Real estate | 2015 |
| Sapori 77 Ltd | Hospitality | 2024 |
| Sapphire Buildings (Blackpool) Ltd | Real estate | 2020 |