| Starkers Enterprises Ltd | Wholesale & retail | 2021 |
| Starkey Services Ltd. | Construction | 2015 |
| Starla Arell Ltd | Health & social care | 2023 |
| Starlet Style Ltd | Wholesale & retail | 2023 |
| Starling Healthcare Limited | Administrative & support | 2026 |
| Starling Maintenance Limited | Construction | 2006 |
| Starling Road Developments Ltd | Real estate | 2016 |
| Starling Road Management Company Limited | Real estate | 2024 |
| Starling Trade Ltd | Wholesale & retail | 2025 |
| Starlink Approved Ltd | Information & communication | 2024 |
| Starlink Technologies Limited | Professional & scientific | 2000 |
| Starlo Ltd | Professional & scientific | 2024 |
| Stars Games Ltd | Information & communication | 2024 |
| Stars Media Group Ltd | Professional & scientific | 2022 |
| Starshine Management Company Limited | Real estate | 1996 |
| Starside Management Limited | Hospitality | 2008 |
| Starsol Ltd | Information & communication | 2006 |
| Starston International Limited | Professional & scientific | 1993 |
| Start Spreading the News Limited | Wholesale & retail | 2003 |
| Start-Rite Classics Limited | Wholesale & retail | 1933 |
| Start-Rite Retail Limited | Wholesale & retail | 2002 |
| Start-Rite Shoes Limited | Wholesale & retail | 1915 |
| Startup Motors Ltd | Transport & logistics | 2017 |
| Startz Ltd | Professional & scientific | 2020 |
| Starwarz Limited | Hospitality | 2015 |
| Starwynn Games Limited | Wholesale & retail | 2009 |
| State of Disarray Ltd | Manufacturing | 2018 |
| Statement Holdings Ltd | Extraterritorial | 2022 |
| Statex Property Limited | Real estate | 2004 |
| Staticmagic Limited | Wholesale & retail | 2001 |
| Station Point Ltd | Real estate | 2020 |
| Station Taxis (Wymondham) Ltd | Transport & logistics | 2007 |
| Statistical Holdings Ltd | Extraterritorial | 2023 |
| Stax & Associates Group Holding Ltd | Financial services | 2016 |
| Stay in Norwich Ltd | Real estate | 2016 |
| Staybrite Home Ltd | Construction | 2025 |
| Staygb Cloud Ltd | Information & communication | 2015 |
| Staygb Ltd | Administrative & support | 2016 |
| Staygb Marine Ltd | Manufacturing | 2016 |
| Staygb Service Ltd | Construction | 2017 |
| Staykey Ltd | Real estate | 2025 |
| Staymoor Limited | Hospitality | 2022 |
| Stayuk Limited | Hospitality | 2023 |
| STB Getley Trading Limited | Hospitality | 2013 |
| STB Norwich Limited | Hospitality | 2024 |
| STB Studios Ltd | Wholesale & retail | 2025 |
| Stcom Limited | Information & communication | 2009 |
| Stdev Ltd | Information & communication | 2020 |
| Steadlo Ltd | Information & communication | 2025 |
| Steamy Windows (Norwich) Ltd | Manufacturing | 2023 |
| Stechford Trucks & Trailers Ltd | Wholesale & retail | 2021 |
| Stechford Trucks Ltd | Wholesale & retail | 2019 |
| Steed (UK) Limited | Mining & quarrying | 2007 |
| Steel Associates Limited | Professional & scientific | 2015 |
| Steel Property Maintenance Services Ltd | Construction | 2024 |
| Steel River Engineering Ltd | Manufacturing | 2018 |
| Steel Services (Croydon) Limited | Manufacturing | 2019 |
| Steelehorse Equestrian Ltd | Arts & recreation | 2026 |
| Steelehorse Training Ltd | Arts & recreation | 2026 |
| Steelfix Ltd | Wholesale & retail | 2020 |
| Steeltech Engineering and Design Limited | Construction | 2007 |
| Steeple & Valley Ltd | Construction | 2025 |
| Steeple Court Limited | Construction | 1986 |
| Stefalex Trade Ltd | Other services | 2026 |
| Stefanov Limited | Transport & logistics | 2019 |
| Stellar Central Services Limited | Administrative & support | 2017 |
| Stellar Construction East Anglia Ltd | Construction | 2021 |
| Stellar Mont Group Limited | Wholesale & retail | 2026 |
| Stelvio Group Limited | Administrative & support | 2022 |
| Stem Tax Limited | Professional & scientific | 2023 |
| Stembotix Ltd | Education | 2024 |
| Stemex Ltd | Information & communication | 2025 |
| Stemlab Tutors Ltd | Education | 2026 |
| Stenfield Limited | Professional & scientific | 2016 |
| Step 4 Better Limited | Professional & scientific | 2022 |
| Step Guard Security Ltd | Administrative & support | 2024 |
| Step Into Tech Community Interest Company | Information & communication | 2017 |
| Step One Clothing UK Limited | Wholesale & retail | 2020 |
| STEP39 Generation Ltd | Construction | 2010 |
| STEP39 Technologies Ltd | Information & communication | 2006 |
| Stephanie Brown Marketing Limited | Professional & scientific | 2020 |
| Stephanie Rowley Consulting Limited | Professional & scientific | 2018 |
| Stephanies of Eaton Ltd | Construction | 2011 |
| Stephen & Sons Norwich Removals Ltd | Transport & logistics | 2019 |
| Stephen Healthcare Limited | Health & social care | 2019 |
| Stephen Heard Management Limited | Professional & scientific | 2012 |
| Stephen Hurrell Steel Construction Limited | Construction | 2016 |
| Stephen Keyworth Limited | Arts & recreation | 2008 |
| Stephen MAI Things Limited | Professional & scientific | 2025 |
| Stephen Medler Transport Limited | Transport & logistics | 2019 |
| Stephen Michael Surveying Limited | Professional & scientific | 2012 |
| Stephen Painter Consulting Ltd | Administrative & support | 2026 |
| Stephen Taylor Books Ltd | Arts & recreation | 2024 |
| Stephen Thompson Builders Ltd | Construction | 2003 |
| Stephen Thorpe Limited | Real estate | 2025 |
| Stephen Welfare Associates Limited | Professional & scientific | 2015 |
| Stephensons Solutions Ltd | Administrative & support | 2021 |
| Stephra Limited | Information & communication | 2025 |
| Stephy Care Limited | Other services | 2019 |
| Stepney Lads Holdings Ltd | Real estate | 2018 |