| Tooth Laboratory 2 Limited | Health & social care | 2017 |
| Tooth Laboratory 3 Limited | Health & social care | 2018 |
| Tooth Laboratory 6 Limited | Health & social care | 2018 |
| Toothwak UK Ltd | Wholesale & retail | 2020 |
| Top Chain Talent Limited | Administrative & support | 2026 |
| Top Civils Limited | Construction | 2009 |
| Top Deck Home Improvements Ltd | Construction | 2019 |
| Top Fades Barbers Limited | Other services | 2022 |
| Top Hill Civils Ltd | Construction | 2016 |
| Top Lane Cars Ltd | Wholesale & retail | 2024 |
| Top Notch Auto Paint Ltd | Wholesale & retail | 2025 |
| Top of Games Ltd | Wholesale & retail | 2025 |
| Top of the Shops Ltd | Wholesale & retail | 2006 |
| Top Property Services North West Ltd | Other services | 2022 |
| Top Shop NW Limited | Wholesale & retail | 2023 |
| Top Style Collection Limited | Manufacturing | 2018 |
| Top Valeting Centre Limited | Wholesale & retail | 2021 |
| Top Wash Car Wash Limited | Administrative & support | 2022 |
| Topa's Traders Limited | Wholesale & retail | 2021 |
| Topbrain Limited | Professional & scientific | 2015 |
| Topcargo Limited | Other services | 2015 |
| Topdog Waterloo Limited | Hospitality | 2018 |
| Topdown Snagging Ltd | Construction | 2025 |
| Topham Growth Ltd | Professional & scientific | 2025 |
| Topiary Consulting Limited | Professional & scientific | 2023 |
| Topklean Limited | Administrative & support | 2025 |
| Topman Drinks Ltd | Information & communication | 2019 |
| Topographical Ltd | Professional & scientific | 2017 |
| Topping Street Properties Limited | Real estate | 2018 |
| Toppo's Haulage Ltd | Transport & logistics | 2022 |
| Topptek Limited | Construction | 2025 |
| Tops 2603 Limited | Hospitality | 2026 |
| TOPS2TOES Ltd | Health & social care | 2021 |
| Topside Technical Services Limited | Professional & scientific | 2021 |
| Topstone Properties Ltd | Real estate | 2022 |
| Topsys-It Limited | Information & communication | 2017 |
| Toptier Accounting Services Limited | Professional & scientific | 2024 |
| Torch Safety Services Ltd | Administrative & support | 2017 |
| Toreli Store Ltd | Wholesale & retail | 2026 |
| Torque Motor Finance Limited | Financial services | 2024 |
| Torque Traders Ltd | Wholesale & retail | 2024 |
| Torsion One Ltd | Manufacturing | 2026 |
| Tosh Gooding Limited | Information & communication | 2015 |
| Total Air Solutions Ltd | Construction | 2013 |
| Total Clad Facades Ltd | Construction | 2024 |
| Total Computers UK Limited | Other services | 2004 |
| Total Concepts (Bolton) Ltd | Construction | 2026 |
| Total Excellence Centre Limited | Professional & scientific | 1992 |
| Total Excellence Centre Training (UK) Ltd | Administrative & support | 2004 |
| Total Handling Solutions Ltd | Manufacturing | 2013 |
| Total Industrial Door Services Limited | Construction | 2017 |
| Total Install Solutions Ltd | Manufacturing | 2019 |
| Total Maintenance Services Limited | Administrative & support | 1988 |
| Total Pallet Solutions (Bolton) Limited | Manufacturing | 2012 |
| Total Project Management & Engineering Limited | Professional & scientific | 2018 |
| Total Soccer Centres Ltd | Education | 2012 |
| Total Swimming Holdings Limited | Professional & scientific | 2020 |
| Totel Protect Limited | Manufacturing | 2025 |
| Totk Management Limited | Households | 2010 |
| Tots to Travel Limited | Administrative & support | 2007 |
| Totu-Transport Ltd | Transport & logistics | 2025 |
| Touchbase Connect Limited | Professional & scientific | 2025 |
| Touchlife Services Limited | Health & social care | 2025 |
| Touchstone Accountancy Ltd | Professional & scientific | 2019 |
| Touko Engineering Limited | Professional & scientific | 2024 |
| Tour of Cheshire Limited | Extraterritorial | 2013 |
| Tour Xperience Limited | Arts & recreation | 2025 |
| Towelbay Ltd | Wholesale & retail | 2022 |
| Toweltex Ltd | Wholesale & retail | 2018 |
| Tower Flooring Ltd | Construction | 2023 |
| Tower Guard Ltd | Administrative & support | 2021 |
| Town and Country Development Partnerships Ltd | Other services | 2018 |
| Town Cafe BLD Limited | Hospitality | 2020 |
| Town Life Ltd | Hospitality | 2022 |
| Town Talk Polish Company Limited | Manufacturing | 1963 |
| Toy Magic Ltd | Wholesale & retail | 2024 |
| Toy Shop Limited | Wholesale & retail | 2019 |
| Toyola Energy Limited | Manufacturing | 2021 |
| Toysfromthewoods Ltd | Wholesale & retail | 2021 |
| TOZ Group Limited | Professional & scientific | 2021 |
| TP & MB Limited | Hospitality | 2017 |
| Tpdconsulting Ltd | Professional & scientific | 2025 |
| TPF Brands Ltd | Wholesale & retail | 2024 |
| TPF Developments Ltd | Construction | 2015 |
| TPP International Limited | Administrative & support | 2018 |
| TPS Property Services Limited | Construction | 2022 |
| TPT Consulting Limited | Professional & scientific | 2023 |
| TQF Express Ltd | Other services | 2023 |
| TR Investments (Bolton) LLP | | 2022 |
| TR Multi Services Limited | Wholesale & retail | 2021 |
| TR Residences Limited | Real estate | 2025 |
| TRA Insulation Ltd | Construction | 2024 |
| Trabajo Aguila Limited | Wholesale & retail | 2024 |
| Tracey Field Consulting Ltd | Professional & scientific | 2025 |
| TRACK2 Recruitment Ltd | Construction | 2021 |
| Trackassist Limited | Information & communication | 2019 |
| Trackershop Limited | Other services | 2011 |
| Tracking Today (GB) Limited | Wholesale & retail | 2023 |
| Tracy Jane Limited | Other services | 2002 |
| Trade Aspire Ltd | Wholesale & retail | 2026 |