| THE Yarn Stash Limited | Wholesale & retail | 2020 |
| THE York Gynaecologist Ltd | Health & social care | 2021 |
| THE Yorkie Courier Ltd | Wholesale & retail | 2026 |
| THE Yorkshire and Humber Equity Fund NO.1 L.P. | | 2002 |
| THE Yorkshire Architect Ltd | Professional & scientific | 2024 |
| THE Yorkshire Cricket Foundation | Education | 2009 |
| THE Yorkshire CUE Company Ltd | Wholesale & retail | 2024 |
| THE Yorkshire Dance Centre Trust | Arts & recreation | 1988 |
| THE Yorkshire Flooring Company Limited | Wholesale & retail | 2013 |
| THE Yorkshire Fund | | 1989 |
| THE Yorkshire Lipo Clinic Ltd | Other services | 2016 |
| THE Yorkshire Lock and Door MAN Limited | Administrative & support | 2021 |
| THE Yorkshire Mafia Limited | Other services | 2010 |
| THE Yorkshire Proper-Tea Co Ltd | Construction | 2026 |
| THE Yorkshire Society | Other services | 2017 |
| THE Yorkshire Supply Line Ltd | Wholesale & retail | 2025 |
| THE Yorkshire Upholsterer Ltd | Other services | 2024 |
| THE Yorkshire Vending Company Ltd | Wholesale & retail | 2026 |
| THE Zone (Leeds) | Arts & recreation | 2008 |
| The-Happy Hand Ltd | Manufacturing | 2025 |
| Thea Louise Limited | Professional & scientific | 2017 |
| Theaker Hall Management Company Limited | Households | 2005 |
| Theatre of the Third AGE Limited | Education | 2007 |
| Theatre Things Limited | Construction | 2012 |
| Thebigword Asia Limited | Administrative & support | 2014 |
| Thebigword BSL UK Limited | Other services | 2024 |
| Thebigword Europe Limited | Administrative & support | 2011 |
| Thebigword Group Bidco Limited | Financial services | 2021 |
| Thebigword Group Holdings Limited | Financial services | 2021 |
| Thebigword Group Limited | Professional & scientific | 2005 |
| Thebigword International Limited | Administrative & support | 2014 |
| Thebigword International Management Services Limited | Professional & scientific | 2015 |
| Thebigword Interpreting Services Limited | Professional & scientific | 2007 |
| Thebigword Limited | Other services | 2000 |
| Thebigword Overseas Interpreting Limited | Professional & scientific | 2012 |
| Thebigword Transcription Services Ltd. | Professional & scientific | 2013 |
| Thebranch CIC | Education | 2025 |
| Thebuyerchoice Ltd | Wholesale & retail | 2025 |
| Thecashbuyers Limited | Real estate | 2021 |
| Thecleanteam Ltd | Administrative & support | 2026 |
| Thedecorcompany Ltd | Other services | 2024 |
| Thedentbusters Ltd | Wholesale & retail | 2023 |
| Theengagementworks Ltd | Information & communication | 2016 |
| Thegiconsultant.Com Limited | Administrative & support | 2007 |
| Thegreenmoon Ltd | Manufacturing | 2025 |
| Thehomebridge Ltd | Information & communication | 2024 |
| Theinsidersnorth Limited | Professional & scientific | 2026 |
| Theiriegroup Limited | Transport & logistics | 2024 |
| Thekama Ltd | Administrative & support | 2023 |
| Thelastottomans Ltd | Education | 2026 |
| Thelongevitydocs Ltd | Health & social care | 2022 |
| Thelovegroup Ltd | Real estate | 2015 |
| Themis Medicolegal Limited | Health & social care | 2021 |
| Theo Drive Ltd | Transport & logistics | 2024 |
| Theo Raynor Consulting Limited | Health & social care | 2018 |
| Theo&Vicky Homes Ltd | Real estate | 2016 |
| Theoddjobservices Ltd | Construction | 2024 |
| Theodore Maximus Enterprises Ltd | Wholesale & retail | 2025 |
| Theologica Limited | Other services | 2022 |
| Theoproperties Ltd | Real estate | 2019 |
| Theprl Ltd | Transport & logistics | 2015 |
| Thera Technologies Limited | Other services | 2025 |
| Therapy HQ Ltd | Health & social care | 2019 |
| Therapy in Care Limited | Professional & scientific | 2022 |
| Therapyuk Ltd | Health & social care | 2017 |
| Therawdahco Ltd | Wholesale & retail | 2025 |
| Therehabworks Limited | Health & social care | 2013 |
| Theresa Holgate Ltd | Professional & scientific | 2007 |
| Theriskhub Limited | Administrative & support | 2017 |
| Therm O RAD UK Limited | Wholesale & retail | 2015 |
| Therma Property Group Ltd | Real estate | 2025 |
| Thermac (Hire) Limited | Manufacturing | 1985 |
| Thermal Engineering Contracts Ltd | Construction | 2009 |
| Thermarks Healthcare Services Ltd | Health & social care | 2023 |
| Thermotrace-Uk Limited | Professional & scientific | 2009 |
| Thethi Builders Limited | Manufacturing | 2020 |
| Thethi Holdings Ltd | Real estate | 2025 |
| Thethi Properties Ltd | Real estate | 2024 |
| Theukrealestate Ltd | Real estate | 2025 |
| Theurbanglow Design & Heritage Ltd | Professional & scientific | 2016 |
| Thevapestop Limited | Wholesale & retail | 2024 |
| Thevegankind Ltd | Hospitality | 2013 |
| Thewhimsywitchsworkshop Ltd | Wholesale & retail | 2026 |
| Thewinecat Ltd | Wholesale & retail | 2025 |
| Theyellowbin Ltd | Water & waste | 2021 |
| Theyyam Ltd | Hospitality | 2024 |
| THG Radiology Limited | Health & social care | 2017 |
| Thibma Ltd | Wholesale & retail | 2024 |
| Thiccc Sauce Limited | Manufacturing | 2021 |
| Think Bright Support Services Ltd | Administrative & support | 2025 |
| Think Business Leeds Limited | Real estate | 2017 |
| Think Collectiv Limited | Professional & scientific | 2016 |
| Think Compliance Consultants Limited | Administrative & support | 2022 |
| Think EJ Ltd | Professional & scientific | 2021 |
| Think Electrical Solutions Limited | Construction | 2019 |
| Think Fast Collective Limited | Professional & scientific | 2025 |
| Think Group Ltd | Financial services | 2024 |
| Think Hospitality Consulting LLP | | 2023 |
| Think Installation Services Ltd | Administrative & support | 2016 |
| Think Leeds Think Business Limited | Extraterritorial | 2019 |