| THE Journey Consultancy Limited | Information & communication | 2024 |
| THE Kitchen, Bathroom and Bedroom Specialists Association Limited | Other services | 1978 |
| THE Kleen-Company Ltd | Administrative & support | 2021 |
| THE Knack Engineering Limited | Professional & scientific | 2024 |
| THE Knotweed Experts (London) LLP | | 2012 |
| THE Kompressor Haus Ltd | Wholesale & retail | 2022 |
| THE Lash Cabin Ltd | Other services | 2021 |
| THE Lazy Gardener Ltd | Wholesale & retail | 2015 |
| THE Lightweight Adventurers Ltd | Arts & recreation | 2023 |
| THE Little Cupcake Company Mansfield Ltd | Manufacturing | 2024 |
| THE Little Hair Studio Limited | Other services | 2026 |
| THE Lorien Group Ltd | Administrative & support | 2016 |
| THE Magic of Antiques Limited | Wholesale & retail | 2025 |
| THE Magic of Porcelain Ltd | Wholesale & retail | 2025 |
| THE Mall (Luton) (General Partner) Limited | Construction | 2016 |
| THE Mangrove Restaurant Limited | Hospitality | 2016 |
| THE Mansfield Hearing Clinic Ltd | Wholesale & retail | 2023 |
| THE Mansfield Hospitals Theatre Troupe CIC | Arts & recreation | 2016 |
| THE Mansfield Park Clinic Ltd | Other services | 2026 |
| THE Mansfield WAX Clinic Limited | Health & social care | 2021 |
| THE Media Wall Co Mansfield Ltd | Construction | 2024 |
| THE Medical Advocacy Service Ltd | Professional & scientific | 2021 |
| THE Mill Project Limited | Construction | 2019 |
| THE Mobile Curry POT Limited | Hospitality | 2015 |
| THE MUG Printing Company Ltd | Manufacturing | 2025 |
| THE Napit Group Limited | Professional & scientific | 2004 |
| THE Nook Caffe Ltd | Hospitality | 2026 |
| THE Offroad Centre Ltd | Wholesale & retail | 2016 |
| THE Old Paratrooper Podcast Ltd | Information & communication | 2025 |
| THE Old Town Barber Shop Ltd | Other services | 2020 |
| THE Old Town Barber Shop Mansfield Ltd | Other services | 2025 |
| THE One Tiktok Agency Limited | Professional & scientific | 2025 |
| THE Orange Wave Ltd | Wholesale & retail | 2025 |
| THE Outdoor Gourmets Pizza Ltd | Hospitality | 2024 |
| THE Pale Snail Stitch Company Ltd | Manufacturing | 2024 |
| THE Parkin Group Limited | Manufacturing | 2002 |
| THE Pavilion at Manor Park CIC | Hospitality | 2025 |
| THE Perfume Lady Limited | Wholesale & retail | 2026 |
| THE Pizza MAN Ltd | Hospitality | 2024 |
| THE Plant POT (Mansfield) Limited | Wholesale & retail | 2003 |
| THE Plumbing and Heating Company (East Midlands) Ltd | Construction | 2018 |
| THE Plumbing and Heating Company (Mansfield) Ltd | Extraterritorial | 2018 |
| THE Plumbing and Heating Company (Nottingham) Ltd | Extraterritorial | 2018 |
| THE Posh PUP Limited | Other services | 2025 |
| THE Printed Gift Company Ltd | Wholesale & retail | 2022 |
| THE Property Investment Company (East Midlands) Limited | Real estate | 2019 |
| THE Property People Network Ltd | Real estate | 2025 |
| THE Really Green Smart Company Limited | Extraterritorial | 2011 |
| THE Refresh Retreat Ltd | Administrative & support | 2008 |
| THE Regency Christmas Company Limited | Other services | 2014 |
| THE Revving Chef BBQ Ltd | Hospitality | 2022 |
| THE Ridge Consult Ltd | Information & communication | 2026 |
| THE RZL Company Limited | Health & social care | 2002 |
| THE Samworth Church Academy | Education | 2007 |
| THE Scooter Hub Limited | Manufacturing | 2012 |
| THE Shadwell Property Company Limited | Households | 2025 |
| THE Sherwood Forest Trust | Professional & scientific | 2005 |
| THE Skin Clinic 1 Ltd | Health & social care | 2020 |
| THE Southwell Road Private Clinic Ltd | Real estate | 2024 |
| THE Spinney (Mansfield) Management Limited | Households | 1997 |
| THE Sports Science Agency Ltd | Arts & recreation | 2015 |
| THE Spread Eagle Hockerton Limited | Hospitality | 2016 |
| THE Stanton Store Limited | Wholesale & retail | 2021 |
| THE Steelyard Limited | Real estate | 2024 |
| THE Sustainable Watch Company Limited | Wholesale & retail | 2021 |
| THE Titchfield Studio Ltd | Manufacturing | 2021 |
| THE Total Woman CIC | Administrative & support | 2025 |
| THE Traditional Gardener Ltd | Administrative & support | 2023 |
| THE Trawlers Catch Crediton Limited | Hospitality | 2011 |
| THE UK FCS Ltd | Professional & scientific | 2020 |
| THE UK Financial Concierge Service LLP | | 2012 |
| THE UP North Members Club Ltd | Other services | 2026 |
| THE Urban Gardeners Limited | Professional & scientific | 2014 |
| THE Venue (Potters) Ltd | Hospitality | 2010 |
| THE Watch Shop Holdings Limited | Wholesale & retail | 2018 |
| THE Will Keeper Limited | Professional & scientific | 2025 |
| THE Window Smith Mansfield Ltd | Construction | 2022 |
| The-Gas-Company Ltd | Construction | 2023 |
| THE1849 Ltd | Hospitality | 2026 |
| Theale Lakes (Eco) Limited | Construction | 2023 |
| Theautoagent Ltd | Wholesale & retail | 2019 |
| Thelandagentco (Mansfield) Limited | Real estate | 2017 |
| Thelify Ltd | Health & social care | 2024 |
| Then WE Design Ltd | Professional & scientific | 2024 |
| Theresellerhub Ltd | Wholesale & retail | 2025 |
| Thermokil Insect Control Services Ltd | Administrative & support | 2006 |
| Thinkace Limited | Wholesale & retail | 2024 |
| Thinkamigo Limited | Information & communication | 2012 |
| Thirdypsalms Music & Media Ltd | Arts & recreation | 2026 |
| This IS Kode Limited | Administrative & support | 2012 |
| This Working Life Ltd | Professional & scientific | 2013 |
| Thistle Cottage Specialist Care Limited | Health & social care | 2022 |
| Thobrom Limited | Construction | 1978 |
| Thomas Stendall Ltd | Financial services | 2020 |
| Thorfinn Wind 'a' Limited | Energy | 1999 |
| Thorpe & Fletcher Developments (Holdco 2) Limited | Financial services | 2024 |
| Thorpe & Fletcher Developments (Newco) Limited | Real estate | 2023 |
| Threadly Ltd | Wholesale & retail | 2025 |
| Three Degrees CRC Ltd | Professional & scientific | 2020 |
| Three Pines Psychology Ltd | Education | 2025 |