| TJG Property Hold Co Ltd. | Financial services | 2019 |
| Tjmc Consulting Ltd | Professional & scientific | 2024 |
| TJP Consulting Ltd | Information & communication | 2013 |
| TJT Machinery Ltd | Wholesale & retail | 2026 |
| TK Distribution Ltd | Wholesale & retail | 2008 |
| TK Prime Limited | Transport & logistics | 2020 |
| TK UK Operations Ltd | Wholesale & retail | 2023 |
| TK3N Properties Ltd | Real estate | 2022 |
| Tkmc Health Ltd | Health & social care | 2023 |
| Tkmc Holdings Ltd | Financial services | 2024 |
| Tkmc Ltd | Real estate | 2019 |
| TKN Holdings Ltd | Financial services | 2026 |
| TKS Hospitality UK Ltd. | Administrative & support | 2014 |
| TLC 624 Limited | Hospitality | 2016 |
| TLC Dinner Choices Limited | Hospitality | 2016 |
| TLE Consultancy Ltd | Professional & scientific | 2016 |
| TLH Enterprises Limited | Professional & scientific | 2014 |
| TLP Consultancy Services Ltd | Professional & scientific | 2014 |
| TLS Lighting Ltd | Wholesale & retail | 2017 |
| TM Chaumba Logistics Ltd | Transport & logistics | 2025 |
| TM Comm Services Limited | Administrative & support | 2017 |
| TM Mortgage Advice Ltd | Financial services | 2020 |
| TM Property Management Limited | Real estate | 2003 |
| TM Realisations Limited | Information & communication | 2003 |
| TMA Bark Supplies Limited | Manufacturing | 2002 |
| TMA Recycling Limited | Professional & scientific | 2002 |
| TMC Nominee Limited | Professional & scientific | 2014 |
| TMK Engineering Services Ltd | Professional & scientific | 2018 |
| Tmmx Ltd | Transport & logistics | 2016 |
| Tmplans.Com Ltd | Administrative & support | 2015 |
| TMR Fire and Security Ltd | Construction | 2025 |
| TMR Fire(Hevingham) Ltd | Public administration | 2022 |
| TMS Media Limited | Professional & scientific | 1989 |
| TN Electrical Consultants Ltd | Professional & scientific | 2016 |
| TN Prime Ltd | Wholesale & retail | 2019 |
| TN World Ltd | Information & communication | 2018 |
| Tnan Ltd | Real estate | 2023 |
| TNC Media Group Ltd | Information & communication | 2026 |
| Toast Poetry Ltd | Arts & recreation | 2021 |
| Tobacco Juice Limited | Manufacturing | 2025 |
| Tobeez Food & Beverage Limited | Hospitality | 2015 |
| Tobin Hospitality Ltd | Hospitality | 2016 |
| Tobruk Medical Care Ltd | Health & social care | 2015 |
| Tobs Services Limited | Health & social care | 2024 |
| Toby Buckland Ltd | Financial services | 2023 |
| Toby Clark Tiling Limited | Construction | 2024 |
| Toby JUG Management Services Ltd. | Hospitality | 2017 |
| Toby M Hammond Ltd | Health & social care | 2017 |
| TOC Images Limited | Other services | 2021 |
| TOC Investments Limited | Real estate | 2022 |
| TOC Trading Ltd | Administrative & support | 2025 |
| Today's Kitchens and Bedrooms Limited | Construction | 2007 |
| Todd & Associates Ltd | Manufacturing | 2015 |
| Todd Hayes Limited | Administrative & support | 2009 |
| Toddwood Ltd | Administrative & support | 2020 |
| Todor Construction Limited | Construction | 2023 |
| Together Accounting Limited | Professional & scientific | 2013 |
| Together AS One Holdings Ltd | Real estate | 2024 |
| Together Creative Collaboration Limited | Professional & scientific | 2008 |
| Together Norfolk | Other services | 2015 |
| Togo's Limited | Administrative & support | 1995 |
| Togos Street Eats Ltd | Hospitality | 2023 |
| Tohanja Ltd | Hospitality | 2019 |
| Tolise Ventures Ltd | Real estate | 2025 |
| Tollgate Farm Residences Management Limited | Households | 2008 |
| Tollgate Studios Limited | Information & communication | 2021 |
| TOM and Toto Ltd | Other services | 2016 |
| TOM Carter Hypnotherapy Ltd | Health & social care | 2023 |
| TOM Comrie Limited | Professional & scientific | 2008 |
| TOM Cunningham Chiropractic Limited | Health & social care | 2009 |
| TOM EKE Ltd | Health & social care | 2010 |
| TOM Fuller Private Hire Ltd | Transport & logistics | 2019 |
| TOM Garton Design Limited | Professional & scientific | 2017 |
| TOM Mackie Images Limited | Professional & scientific | 2006 |
| TOM Mackie Properties Ltd | Real estate | 2017 |
| TOM Mcphee Ltd | Information & communication | 2020 |
| Tom's Active Learning Limited | Arts & recreation | 2023 |
| Tomas Driving (UK) Ltd. | Transport & logistics | 2016 |
| Tomas Laurincikas Limited | Extraterritorial | 2025 |
| Tomasz Jakubczak Ltd | Health & social care | 2025 |
| Tomaszwro Ltd | Health & social care | 2015 |
| Tomdriver Ltd | Transport & logistics | 2018 |
| Tomindeed Productions Ltd | Arts & recreation | 2021 |
| Tommy Engineering Ltd | Professional & scientific | 2019 |
| Tommy Router Limited | Professional & scientific | 2022 |
| Toneka Medical Services Limited | Health & social care | 2015 |
| Tonga Reef Ltd | Manufacturing | 2026 |
| Toni Guanter Ltd | Health & social care | 2022 |
| Toni's Barber Shop Limited | Other services | 2023 |
| Toni-Marrie Childcare Ltd | Health & social care | 2024 |
| Tonorwich Ltd | Transport & logistics | 2018 |
| Tonsef Limited | Extraterritorial | 2025 |
| Tony Clayton Bookmakers Limited | Arts & recreation | 2021 |
| Tony Ridley Hyperbaric Associates Limited | Professional & scientific | 1997 |
| Tony Sayer Limited | Construction | 2015 |
| Tony's Clippers and Scissors Ltd | Other services | 2025 |
| Tooltique Ltd | Wholesale & retail | 2016 |
| Tooltruck Norwich Limited | Wholesale & retail | 2012 |
| Toombs Butchers Ltd | Wholesale & retail | 2004 |
| Top Boyy Limited | Wholesale & retail | 2020 |