| Strange Hill Limited | Other services | 2010 |
| Strange Matter Ltd | Information & communication | 2025 |
| Strange Moon Digital Ltd | Information & communication | 2018 |
| Strangers Coffee Company Ltd | Wholesale & retail | 2015 |
| Strangers PUB Company Limited | Hospitality | 2019 |
| Strangers' Club,Limited | Other services | 1927 |
| Strangers' Court Residents' Association Limited | Real estate | 1981 |
| Stratagem Solutions Limited | Information & communication | 2017 |
| Strategic Placements (North West) Limited | Real estate | 2012 |
| Strategic Placements Peasedown (Phase 2) Limited | Real estate | 2012 |
| Strategic Placements Peasedown Limited | Real estate | 2011 |
| Strategic Placements Wood Street Limited | Real estate | 2012 |
| Strategic Proposals (ASW) Limited | Professional & scientific | 2015 |
| Strategity Limited | Professional & scientific | 2014 |
| Strategy and Policy Consultants Network Limited | Administrative & support | 2002 |
| Strategy TWENTY3 Limited | Professional & scientific | 2026 |
| Stratfords of Eaton Ltd | Real estate | 2012 |
| Stratstan Holdings Limited | Professional & scientific | 2001 |
| Stratton Auto Services Limited | Wholesale & retail | 2019 |
| Stratton Cladding Services Ltd | Construction | 2016 |
| Stratton Enterprises Limited | Professional & scientific | 2021 |
| Stratton Flooring Limited | Construction | 2003 |
| Stratton Holdings (Norfolk) Limited | Real estate | 2019 |
| Stratton London Limited | Construction | 2020 |
| Stratton Pizza Co Ltd | Hospitality | 2025 |
| Stratton Quickfit Limited | Wholesale & retail | 2005 |
| Stratton Security Ltd | Administrative & support | 2007 |
| Stratton Transport & Storage Ltd | Transport & logistics | 2004 |
| Strawberryfields Farm & Coffee Shop Ltd | Hospitality | 2020 |
| Streamblue Limited | Administrative & support | 2011 |
| Streamline Products Ltd | Wholesale & retail | 2025 |
| Street Agency Limited | Professional & scientific | 2019 |
| Street Presence | Other services | 2015 |
| Street Shots Ltd | Professional & scientific | 2024 |
| Streetfield (Hacheston) Limited | Households | 2022 |
| Streethub Ltd | Wholesale & retail | 2013 |
| Streetly Balti Limited | Hospitality | 2023 |
| Stress Free Norfolk Ltd | Wholesale & retail | 2021 |
| Stresscatcher LLP | | 2023 |
| Stretch Mark Solutions Ltd | Other services | 2025 |
| Strictly Tickets Limited | Arts & recreation | 2021 |
| Stride Health Group Ltd | Health & social care | 2004 |
| Strike Bowling Ltd | Arts & recreation | 2019 |
| Strike Research Limited | Arts & recreation | 2009 |
| Stringfellas Barber Shop Ltd | Other services | 2022 |
| Strong Force Limited | Education | 2018 |
| Strongbar Holdings Limited | Financial services | 2016 |
| Strongbar Limited | Manufacturing | 1983 |
| Strongburn Limited | Professional & scientific | 1973 |
| Strongrock Capital Limited | Professional & scientific | 2018 |
| Stroud Limited | Hospitality | 2026 |
| Stroud Mortgage Solutions Limited | Financial services | 2025 |
| Struktur Design Limited | Administrative & support | 2002 |
| Strumpshaw Estates Ltd | Agriculture & fishing | 2022 |
| Strumpshaw Game Farm Limited | Agriculture & fishing | 2010 |
| Strumpshaw Steam Rally Ltd | Arts & recreation | 2017 |
| STS (Birmingham) Ltd | Hospitality | 2017 |
| STS Ceramics Ltd | Construction | 2025 |
| STU and Dani Limited | Construction | 2012 |
| Stuart Attwood Builders (Norwich) Ltd | Construction | 2004 |
| Stuart Attwood Builders Limited | Administrative & support | 1998 |
| Stuart Bradshaw Ltd | Other services | 2003 |
| Stuart Branigan Construction Limited | Construction | 2017 |
| Stuart Cranes & Plant Limited | Administrative & support | 2023 |
| Stuart Design & Build Limited | Construction | 2023 |
| Stuart Munford Limited | Administrative & support | 2018 |
| Stuart Simpson Joinery Specialist Ltd. | Manufacturing | 2002 |
| Stubbs Barn Limited | Information & communication | 2001 |
| Stubenhocker Ltd | Information & communication | 2016 |
| Students' Union Services (East Anglia) Limited | Hospitality | 1980 |
| Studio 163 Ltd | Construction | 2018 |
| Studio 163 Planning Ltd | Professional & scientific | 2023 |
| Studio 35 Architecture Ltd | Professional & scientific | 2017 |
| Studio Adapt Ltd | Professional & scientific | 2019 |
| Studio Adorn Ltd | Manufacturing | 2022 |
| Studio AH Enterprises Ltd | Arts & recreation | 2024 |
| Studio Bake Ltd | Professional & scientific | 2022 |
| Studio Bask Limited | Information & communication | 2022 |
| Studio Drake Ltd | Professional & scientific | 2020 |
| Studio Four Norwich Limited | Other services | 2023 |
| Studio GEE Ltd | Manufacturing | 2023 |
| Studio Goblin Ltd | Information & communication | 2024 |
| Studio Henki Limited | Wholesale & retail | 2012 |
| Studio Jones London Limited | Hospitality | 2020 |
| Studio Kingsland Ltd | Professional & scientific | 2023 |
| Studio Leaf Ltd | Professional & scientific | 2023 |
| Studio Miko Limited | Professional & scientific | 2019 |
| Studio Nira Ltd | Arts & recreation | 2025 |
| Studio Recruitment Limited | Administrative & support | 2009 |
| Studio Rogue Ltd | Professional & scientific | 2018 |
| Studio Saunders Limited | Information & communication | 2025 |
| Studiospark Limited | Professional & scientific | 2011 |
| Studious Digital Education Ltd | Education | 2019 |
| Studioworx Contemporary Art Limited | Information & communication | 2004 |
| Stumpys Storage Ltd | Transport & logistics | 2025 |
| Stunt Stars Limited | Information & communication | 2018 |
| Sturgeon Programming Limited | Information & communication | 2022 |
| Sturgis Landscapes Ltd | Other services | 2021 |
| Stuts Limited | Extraterritorial | 2016 |
| Style & Revive Ltd | Other services | 2021 |