| Sure-Safe Limited | Wholesale & retail | 1995 |
| Sustain Property Services Ltd | | 2010 |
| SW Lighting Limited | Arts & recreation | 2021 |
| SW Squared Ltd | Manufacturing | 2015 |
| Swanky Modes Limited | Other services | 2014 |
| Sway Location Services Ltd | Administrative & support | 2019 |
| Sweet Carolina Herne Hill Ltd | Hospitality | 2025 |
| Sweet Carolina Limited | Manufacturing | 2015 |
| Sweet Carolina Property Ltd | Real estate | 2021 |
| Sweet Soul Beauty Limited | Other services | 2025 |
| SWH Property Ltd. | Real estate | 2011 |
| Swift Clear Services Ltd | Transport & logistics | 2024 |
| Swiftempire Agency Ltd | Professional & scientific | 2023 |
| Sylva FOX Ltd | Agriculture & fishing | 2019 |
| Sylvia’S 2019 Limited | Hospitality | 2019 |
| Syrris Limited | Manufacturing | 2009 |
| Systems Frontier LAB Ltd | Professional & scientific | 2026 |
| T B Property Services Ltd | Construction | 2019 |
| T Claydon Ltd | Professional & scientific | 2013 |
| T G Pepper Ltd | Agriculture & fishing | 2012 |
| T J R Accounting Ltd | Professional & scientific | 2011 |
| T L a Farms Limited | Agriculture & fishing | 1998 |
| T&A Core Ltd | Real estate | 2023 |
| T.A.W. Shopfitting & Building Services Limited | Construction | 1987 |
| T.Bala Ltd | Households | 2023 |
| TAA Surveyors Ltd | Professional & scientific | 2018 |
| Tadlow Steel Ltd | Manufacturing | 1999 |
| TAF Rural Solutions Ltd | Construction | 2023 |
| TAJ Mahal Night Catering Ltd | Hospitality | 2025 |
| Taking Note Limited | Information & communication | 2022 |
| Talent Hub Ltd | Administrative & support | 2019 |
| Talk Business Limited | Information & communication | 2017 |
| Tall & Small Construction Limited | Construction | 2012 |
| Tamara House (QEW) Management Company Limited | Households | 2004 |
| TAN House Accounting Ltd | Professional & scientific | 2014 |
| Tanner Furniture Designs Ltd | Manufacturing | 2014 |
| Tanyard (Bassingbourn) Residents Society Limited | Households | 1969 |
| TAP Biosystems Group Limited | Manufacturing | 1998 |
| Tapthat Industries Ltd | Administrative & support | 2018 |
| Tasma Products Limited | Wholesale & retail | 2012 |
| TBC Developments & Construction Limited | Construction | 2020 |
| TBC Properties Limited | Real estate | 2016 |
| TBC Publishing Limited | Information & communication | 2012 |
| TCB Logistics Ltd | Transport & logistics | 2020 |
| TDC Networks Limited | Information & communication | 2010 |
| Tdga Holdings Ltd | Information & communication | 2019 |
| Teachcpd Ltd | Education | 2025 |
| Techcomp (Europe) Limited | Financial services | 2012 |
| Technical Services Management Limited | Other services | 2025 |
| Technical Vehicle Solutions Ltd | Wholesale & retail | 2020 |
| Teddy Brigade Holdings Limited | Financial services | 2020 |
| Teme Travel Limited | Professional & scientific | 2009 |
| Temple Maintenance Limited | Construction | 2000 |
| Temple QP Services Ltd | Administrative & support | 2013 |
| Tempo Compliance Testing Ltd | Professional & scientific | 2020 |
| TEN Bridge Consulting Ltd | Information & communication | 2024 |
| Tentshare Ltd | Hospitality | 2021 |
| Terrible Tours Ltd | Administrative & support | 2022 |
| Teslin Limited | Real estate | 2017 |
| TGA Building Consultancy Limited | Professional & scientific | 1994 |
| TGA Developments Limited | Construction | 2010 |
| TGH Commerce Ltd | Wholesale & retail | 2025 |
| Thai Limited | Hospitality | 2005 |
| Thai Thai Street Food Limited | Hospitality | 2025 |
| Thaiger Ventures (UK) Limited | Public administration | 2005 |
| THE Accessory Outlet Limited | Professional & scientific | 2009 |
| THE Accountancy Practice Cambridge Ltd | Extraterritorial | 2022 |
| THE Accountancy Practice London Ltd | Professional & scientific | 2007 |
| THE Accounts Company (S.East) Limited | Professional & scientific | 2011 |
| THE Apptec Group Limited | Administrative & support | 2022 |
| THE Arden Agency Limited | Professional & scientific | 2023 |
| THE Art of the Party Limited | Hospitality | 2017 |
| THE Arts Whole Ltd | Extraterritorial | 2021 |
| THE Audio & Visual Guys Ltd | Professional & scientific | 2020 |
| THE Automation Partnership (Cambridge) Limited | Manufacturing | 1993 |
| THE Bath Buddy Company Limited | Manufacturing | 2015 |
| THE Big Green Heat Company Ltd | Construction | 2021 |
| THE Brilliant Group 2025 Ltd | Financial services | 2025 |
| THE Butts Business Centre Limited | Real estate | 1992 |
| THE Cambridge Sock Company Limited | Wholesale & retail | 2018 |
| THE Causeway (Bassingbourn) Management Limited | Households | 2018 |
| THE Commercial Property Investor Ltd. | Professional & scientific | 2015 |
| THE Cranes Head PUB Co Ltd | Hospitality | 2020 |
| THE Crazy Dog Ladies Academy Ltd | Other services | 2024 |
| THE Crazy Dog Ladies Grooming Ltd | Other services | 2024 |
| THE Crown Church Street Ltd | Hospitality | 2024 |
| THE Direct Tableware Company Limited | Wholesale & retail | 1992 |
| THE Dolomite Centre Limited | Manufacturing | 2005 |
| THE Food and Wine Store Limited | Wholesale & retail | 2013 |
| THE Functional Fitness Centre Limited | Other services | 2025 |
| THE Getmefit Collective Ltd | Information & communication | 2020 |
| THE Glass Building Freehold Limited | Households | 2021 |
| THE Grange (Ramsgate) Management Company Limited | Households | 2006 |
| THE Growth Consultancy Cambridge Limited | Professional & scientific | 2017 |
| THE Haulage Franchise Limited | Transport & logistics | 2019 |
| THE Heart That Roared Limited | Information & communication | 2009 |
| THE Highfield Grove (Barkway) Management Company Limited | Administrative & support | 2016 |
| THE Holistic Workshop Ltd | Other services | 2000 |
| THE Home Corner Limited | Wholesale & retail | 2018 |
| THE Hoops Bassingbourn Limited | Hospitality | 2009 |