| THE Kind Soles Ltd | Professional & scientific | 2022 |
| THE King's Country (Yehushua) CIC | Other services | 2025 |
| THE Lawn Ritual Ltd | Administrative & support | 2025 |
| THE Meaning of Cleaningta Ltd | Administrative & support | 2022 |
| THE Missing Word Limited | Professional & scientific | 2006 |
| THE Network of Women in Events CIC | Professional & scientific | 2024 |
| THE NOT SO Posh PUB Company Limited | Hospitality | 2024 |
| THE Pain Service Limited | Health & social care | 2011 |
| THE Paranoid Celluloid Company Limited | Information & communication | 1997 |
| THE Peregrine Centre CIC | Education | 2019 |
| THE Pretty Little Publishing Co Ltd | Information & communication | 2023 |
| THE Rebel Florist Club Ltd | Administrative & support | 2021 |
| THE Resident Care Ltd | Administrative & support | 2024 |
| THE Salon on the Green Limited | Other services | 2017 |
| THE Square Cafe Ltd | Hospitality | 2025 |
| THE Squire Event Company Limited | Arts & recreation | 2003 |
| THE ST Neots Carpet Company Ltd | Construction | 2007 |
| THE ST Neots Cleaning Company Ltd | Administrative & support | 2009 |
| THE Sunstone Clinics Ltd | Other services | 2018 |
| THE Third EYE (TTE) Limited | Real estate | 2014 |
| THE Ultimate Storefront Ltd | Wholesale & retail | 2024 |
| THE Vizier Group Ltd | Professional & scientific | 2024 |
| THE Whistlestop Trading Post Ltd | Wholesale & retail | 2015 |
| THE White Hart Godmanchester Ltd | Hospitality | 2007 |
| THE Wilde Group Ltd. | Manufacturing | 1993 |
| THE Yorkshire Grilla Ltd | Hospitality | 2022 |
| THE ZEN Project Community CIC | Health & social care | 2020 |
| Thecaddesigner Ltd | Professional & scientific | 2008 |
| Thermo-Flow Services Limited | Construction | 2015 |
| Thesaurum Gold Exploration Ltd. | Mining & quarrying | 2020 |
| Thesaurum Ltd. | Mining & quarrying | 2020 |
| Thezenproject Ltd | Other services | 2020 |
| Thinkers & Dreamers Ltd | Professional & scientific | 2026 |
| Thirteen One Limited | Construction | 2011 |
| Thomas Associates SWL Ltd | Health & social care | 2012 |
| Thorngate Cyber Security and Communications Ltd | Information & communication | 2026 |
| Thornhill Estates Limited | Real estate | 1933 |
| Thoroughbred Threads Ltd | Wholesale & retail | 2024 |
| Threadgold Distributors Ltd | Other services | 2024 |
| Three Crescent Properties Group Limited | Real estate | 2023 |
| Three Crescent Properties Ltd | Real estate | 2016 |
| Three Pears Quality Consulting Ltd | Professional & scientific | 2026 |
| Thrive Aqua Group Ltd | Agriculture & fishing | 2025 |
| Thrive Paediatrics Ltd | Health & social care | 2026 |
| Tiho Contracting Ltd | Other services | 2024 |
| Tilley & Sons Ltd | Transport & logistics | 2025 |
| Tilly Trailer Pass Limited | Professional & scientific | 2023 |
| Tilow Events Limited | Administrative & support | 2024 |
| Time and Talent Limited | Real estate | 2015 |
| Timerus Ltd | Other services | 2018 |
| TIS (ST Neots) Ltd | Other services | 2018 |
| Titan Automotive Limited | Professional & scientific | 2000 |
| Titan Boxing Equipment Ltd. | Manufacturing | 2016 |
| Titan Engineering Group Limited | Financial services | 2021 |
| Titan Motorsport & Automotive Engineering Ltd | Manufacturing | 1975 |
| Titan Race Products Limited | Professional & scientific | 2010 |
| Titanium Training Limited | Education | 2018 |
| TKG Consulting Ltd | Professional & scientific | 2012 |
| TMS Holdings (Bedford) Limited | Other services | 2019 |
| Toco Consulting Limited | Professional & scientific | 2023 |
| Tokeniz Limited | Information & communication | 2024 |
| TOM Construction Ltd | Construction | 2022 |
| TOM Watson Contracting Ltd | Information & communication | 2019 |
| Tonneau Ltd | Professional & scientific | 2020 |
| Tony Frost Consultancy Limited | Professional & scientific | 2009 |
| Top Controls Ltd | Professional & scientific | 2022 |
| Topi Developments Limited | Construction | 2013 |
| Total Automotive Solutions Limited | Wholesale & retail | 2010 |
| Total Belting Solutions Limited | Manufacturing | 2015 |
| Total Training Support Ltd | Information & communication | 2006 |
| Townhouse Bridal Ltd | Wholesale & retail | 2018 |
| TPJ Engineering Limited | Professional & scientific | 2012 |
| TR Taverns Ltd | Hospitality | 2026 |
| Traction ENG Ltd. | Professional & scientific | 2012 |
| Trade Connect Cambridge Conferences Ltd | Administrative & support | 2023 |
| Trapdoor Records Limited | Information & communication | 2012 |
| Treadaway Contracting Ltd | Administrative & support | 2019 |
| Trees Management Company Limited | Households | 2005 |
| Tribeca Enterprises Limited | Information & communication | 2005 |
| Trijaas Ltd | Other services | 2018 |
| Tropicburn Limited | Wholesale & retail | 1986 |
| Truebridgedigitalmarketing Ltd | Professional & scientific | 2025 |
| Trueform Scaffolding Limited | Construction | 2014 |
| TSD Community Limited | Information & communication | 2025 |
| Tsoka Engineering Services Ltd | Professional & scientific | 2014 |
| Tuc-Industrieservice Ltd. | Professional & scientific | 2009 |
| Tudor Gate Management Company Limited | Households | 1985 |
| Turftrax Limited | Information & communication | 2004 |
| Turkertex Ltd | Wholesale & retail | 2017 |
| Turkish BBQ ST Neots Ltd | Hospitality | 2024 |
| Turner 4 Holdings Limited | Real estate | 2025 |
| Ubiquity Retail & Logistics UK Ltd | Wholesale & retail | 2025 |
| Udiness Ltd | Wholesale & retail | 2018 |
| Udohs Ltd | Wholesale & retail | 2023 |
| UK Membranes Supplies Ltd | Construction | 2015 |
| Ukala Ltd | Information & communication | 2025 |
| UKTRANSPORT4U Ltd | Transport & logistics | 2022 |
| Ullswater Huntingdon (1-11) Ltd | Households | 2023 |
| Ultimate Gym Equipment Ltd | Manufacturing | 2017 |
| Ultra Physio Ltd | Health & social care | 2009 |