| Top Baker Limited | Transport & logistics | 2026 |
| Top Car Hire Ltd | Administrative & support | 2023 |
| Top Cat Investments Limited | Professional & scientific | 2019 |
| Top Class Wholesale Ltd | Wholesale & retail | 2022 |
| Top Clear Language Solutions Limited | Professional & scientific | 2025 |
| Top Communications Limited | Information & communication | 2006 |
| Top Cuts Wolves Ltd | Other services | 2025 |
| Top Deal Holdings Ltd | Real estate | 2022 |
| Top Fleet Glass Carriers Limited | Manufacturing | 2020 |
| Top FRY Fish & Chips Limited | Hospitality | 2024 |
| Top Immigration Services Ltd | Professional & scientific | 2026 |
| Top M Logistics Limited | Transport & logistics | 2018 |
| Top Market Supermarket Ltd | Wholesale & retail | 2024 |
| Top Naman Commercial Investment Ltd | Real estate | 2025 |
| Top Nosh Grub Ltd | Hospitality | 2026 |
| Top Notch Investors Ltd | Real estate | 2025 |
| Top of the Chaat Limited | Hospitality | 2021 |
| Top Quality Comms Limited | Information & communication | 2020 |
| Top Skin Care Ltd | Wholesale & retail | 2026 |
| Top Tier Investments Group UK Ltd | Hospitality | 2025 |
| Top Tier Logistics and Services Ltd | Transport & logistics | 2022 |
| Top Tier Supplements Limited | Wholesale & retail | 2024 |
| Top Used Cars Sales Ltd | Wholesale & retail | 2024 |
| Top Windows & Doors Limited | Manufacturing | 2024 |
| Topgear Properties Ltd | Real estate | 2024 |
| Topgear Wolverhampton Ltd | Wholesale & retail | 2023 |
| Tops Services Limited | Wholesale & retail | 2025 |
| Topteam Resources & Recruitment Ltd | Administrative & support | 2015 |
| Toptelco Ltd | Information & communication | 2025 |
| Topydem Limited | Health & social care | 2014 |
| Torchlight Security Ltd | Administrative & support | 2025 |
| Toriavickie Limited | Health & social care | 2017 |
| Torva Electrical Ltd | Construction | 2016 |
| Torwell Global Limited | Professional & scientific | 2025 |
| Tosara Limited | Professional & scientific | 1984 |
| Toshi Singh Ltd | Extraterritorial | 2024 |
| Toshi Walker Ltd | Extraterritorial | 2024 |
| Total AGV Solutions Ltd | Manufacturing | 2025 |
| Total ATF Limited | Wholesale & retail | 2019 |
| Total Auto Garage Limited | Wholesale & retail | 2015 |
| Total Call OUT Limited | Health & social care | 2014 |
| Total Construction Supplies (Northern) Limited | Manufacturing | 2021 |
| Total Crane Solutions Limited | Manufacturing | 2016 |
| Total Fitness Solutions Limited | Arts & recreation | 2003 |
| Total Food Midlands Ltd | Wholesale & retail | 2026 |
| Total Grading Ltd | Wholesale & retail | 2026 |
| Total Holding Solutions Limited | Financial services | 2024 |
| Total Home Survey Ltd | Professional & scientific | 2025 |
| Total I-Tech Limited | Manufacturing | 2013 |
| Total PAY Solutions Limited | Administrative & support | 2025 |
| Total Plumbing Heating and GAS Solutions Ltd | Energy | 2024 |
| Total Plumbing Installations Ltd | Construction | 2018 |
| Total Rail & Construction Ltd | Administrative & support | 2022 |
| Total Refurbishment and Build Solutions Limited | Construction | 2014 |
| Total Team Tennis Limited | Education | 2011 |
| Totally Care Holdings Limited | Financial services | 2023 |
| Totally Care Limited | Administrative & support | 2017 |
| Totally Care Properties Limited | Real estate | 2024 |
| Totally PAY Solutions Ltd | Administrative & support | 2025 |
| Totally Weather.Com Limited | Professional & scientific | 2000 |
| Totogi Ltd | Administrative & support | 2022 |
| Totts Ventures Limited | Real estate | 2025 |
| Touch-Dry Cleaning Ltd | Other services | 2010 |
| Touchplanet Limited | Information & communication | 2024 |
| Touchstone Civil Engineering Limited | Construction | 2024 |
| Touchwood Housing Services Ltd | Real estate | 2019 |
| Touhidi Ltd | Administrative & support | 2025 |
| Tower View Deals Limited | Wholesale & retail | 2019 |
| Town and Country (Shropshire) Properties Ltd | Real estate | 2026 |
| Town and Country Meats (London) Limited | Wholesale & retail | 2021 |
| Town and Country Meats Group Ltd | Wholesale & retail | 2019 |
| Town and Country Midlands Properties Ltd | Wholesale & retail | 2019 |
| Town and Country North Properties Ltd | Real estate | 2025 |
| Townsend Home Installations Limited | Other services | 2018 |
| Toxiat Ltd | Manufacturing | 2019 |
| Toy World Limited | Wholesale & retail | 2024 |
| TP Sales and Marketing Consultancy Ltd | Professional & scientific | 2022 |
| TPM Cladding & Roofing Ltd | Construction | 2026 |
| Tpsquared Limited | Professional & scientific | 2019 |
| TR Carsales Ltd | Wholesale & retail | 2020 |
| TR Stocking Limited | Wholesale & retail | 2022 |
| Traam Food and Confectionery Ltd | Manufacturing | 2026 |
| Tracker Designs Limited | Information & communication | 2000 |
| Trackforce Valiant Limited | Information & communication | 2012 |
| Trade Software Solutions Ltd | Information & communication | 2015 |
| Trade Wayz Limited | Administrative & support | 2017 |
| Tradecommerce Hub Ltd | Wholesale & retail | 2026 |
| Tradeline Wholesale Ltd | Wholesale & retail | 2026 |
| Trademason Ltd | Information & communication | 2026 |
| Traders Reality Limited | Information & communication | 2021 |
| Tradesphere Invest Ltd | Professional & scientific | 2024 |
| Tradeware Group Ltd | Wholesale & retail | 2025 |
| Tradeworks Property Maintenance Ltd | Real estate | 2025 |
| Tradexus Limited | Wholesale & retail | 2025 |
| Traditional Garden Buildings Limited | Wholesale & retail | 2020 |
| Traditional Garden Services Ltd | Wholesale & retail | 2020 |
| Trafalgar Enterprise Holdings Limited | Health & social care | 2001 |
| Traffic Limited | Administrative & support | 2015 |
| Traffic Signs UK Limited | Other services | 2022 |
| Traian Home Services Ltd | Construction | 2020 |