| THE Mill House at Milford Limited | Hospitality | 2018 |
| THE Mill PUB Group Ltd | Hospitality | 2026 |
| THE Modern Clinic Ltd | Health & social care | 2025 |
| THE Moors IT and Pet Services Limited | Information & communication | 2023 |
| THE Morris Minor Club Limited | Professional & scientific | 1984 |
| THE Mortgage Advice Centre LLP | | 2006 |
| THE Mortgage Broker (London) Limited | Financial services | 2017 |
| THE Mortgage Broker (ST. Neots) Limited | Financial services | 2009 |
| THE Mortgage Broker Group Limited | Financial services | 2018 |
| THE Mortgage Broker Limited | Financial services | 2011 |
| THE Movement Project Ltd | Arts & recreation | 2026 |
| THE MP Skin and Aesthetics Ltd | Other services | 2025 |
| THE Multi-Faith Centre at the University of Derby | Education | 2000 |
| THE Music Locker Limited | Wholesale & retail | 2018 |
| THE Musicians Coach Limited | Education | 2026 |
| THE Natural Childcare Company Limited | Education | 2008 |
| THE Natural Root Healing Clinic Ltd | Health & social care | 2023 |
| THE Natural Way (Derby) Limited | Health & social care | 1995 |
| THE Neat Approach Ltd | Administrative & support | 2025 |
| THE Neuro Nest Derby CIC | Health & social care | 2025 |
| THE Nexgen Derby CIC | Other services | 2025 |
| THE Next GEN Intelligence Academy CIC | Education | 2020 |
| THE Next Sketch Ltd | Professional & scientific | 2022 |
| THE Nsibidi Project CIC | Education | 2023 |
| THE NUB Whisperers Ltd | Other services | 2021 |
| THE Oak Tree Nursery & Pre-School Limited | Education | 2003 |
| THE Oaklands Group Limited | Wholesale & retail | 2016 |
| THE Oaks at Hadden Residents Management Company Limited | Households | 2024 |
| THE Ocean Foundry Ltd | Wholesale & retail | 2026 |
| THE Oddities Store Ltd | Manufacturing | 2023 |
| THE Official Morris Minor Owners Club Limited Trading AS the Official Mmoc Limited | Professional & scientific | 2019 |
| THE Old Barn Day Nursery Limited | Education | 2016 |
| THE Old Bell (Derby) Ltd | Wholesale & retail | 2012 |
| THE Old Forge Day Nursery Ltd | Education | 2007 |
| THE Old Oak Tree PUB Ltd | Hospitality | 2014 |
| THE Old Surgery Derby Limited | Real estate | 2020 |
| THE One OFF Group Limited | Extraterritorial | 2003 |
| THE One OFF India Limited | Professional & scientific | 2018 |
| THE One OFF London Limited | Professional & scientific | 2005 |
| THE One OFF Melbourne Limited | Professional & scientific | 2005 |
| THE Open Centre Derby Limited | Education | 1999 |
| THE Orchard (Allestree) Management Company Limited | Professional & scientific | 2018 |
| THE Other Side Creative Limited | Professional & scientific | 2012 |
| THE Outdoor Guide Foundation CIC | Education | 2021 |
| THE Outdoor Guide Ltd | Administrative & support | 2014 |
| THE Paddock (Eastergate) Residents Management Company Limited | Households | 2023 |
| THE Paddock MAN Limited | Administrative & support | 2022 |
| THE Paddocks (Longframlington) Residents Management Company Limited | Households | 2018 |
| THE Padley Group | Health & social care | 1992 |
| THE Painting House Ltd | Construction | 2026 |
| THE Pantry (Derby) Limited | Hospitality | 2025 |
| THE Parenting With Intention Academy CIC | Health & social care | 2023 |
| THE Parklands Residents Management Company Limited | Households | 2015 |
| THE Parmo Co. Ltd | Hospitality | 2026 |
| THE Pastures Golf Club (2008) Ltd | Arts & recreation | 2008 |
| THE Paul Barker Practice Limited | Financial services | 2008 |
| THE Peacock Lounge Ltd | Other services | 2019 |
| THE Penny Drops Worldwide Limited | Education | 2010 |
| THE Pension Review Business Limited | Financial services | 2013 |
| THE PEP Shop Limited | Financial services | 1991 |
| THE Pepper POT Derby Limited | Hospitality | 2022 |
| THE Pepper POT Derby Management Company Limited | Extraterritorial | 2023 |
| THE Pepper POT Derby Property Company Limited | Real estate | 2023 |
| THE Performance Drive: Athletic Development & Rehab Ltd | Information & communication | 2025 |
| THE Performer Journals Limited | Arts & recreation | 2019 |
| THE Pier Studio London Limited | Professional & scientific | 2017 |
| THE Point of Sharing Ltd. | Information & communication | 2013 |
| THE Point Office Village Management Company Limited | Real estate | 2008 |
| THE Port Asset Number One Limited | Other services | 2021 |
| THE Potty Plotters Ltd | Professional & scientific | 2019 |
| THE Prestige Motorclub Ltd | Wholesale & retail | 2024 |
| THE Prior Way Ltd | Wholesale & retail | 2008 |
| THE Private Car Collection Ltd | Wholesale & retail | 2026 |
| THE Produce People Limited | Hospitality | 2024 |
| THE Professional Dating Co Limited | Professional & scientific | 2022 |
| THE Project Monkey Ltd | Professional & scientific | 2023 |
| THE Property Monkey Ltd | Real estate | 2021 |
| THE Pump Point Group Ltd | Professional & scientific | 2023 |
| THE QSS Group Limited | Professional & scientific | 2001 |
| THE Qube Recoveries Limited | Transport & logistics | 2023 |
| THE Quirky Quote Co Ltd | Wholesale & retail | 2025 |
| THE Quube Limited | Transport & logistics | 2023 |
| THE Rainbow Unisaur Ltd | Wholesale & retail | 2020 |
| THE Rams Agency Ltd | Professional & scientific | 2023 |
| THE Raspberries Ltd | Hospitality | 2021 |
| THE RAW Pet Store Limited | Wholesale & retail | 2021 |
| THE Re::Set Board Limited | Professional & scientific | 2026 |
| THE Real ME Therapy Limited | Health & social care | 2024 |
| THE Recruitment Group Holdings Limited | Financial services | 2025 |
| THE Recruitment Group Limited | Financial services | 2022 |
| THE Red Lion at Repton Ltd | Hospitality | 2025 |
| THE Redeemed Christian Church of GOD Love Assembly Derby | Other services | 2017 |
| THE Redeemed Christian Church of GOD Zion Hill Burton | Other services | 2023 |
| THE Rehman Ridge Limited | Financial services | 2025 |
| THE Reindeer at Long Bennington Limited | Hospitality | 2016 |
| THE Remarkable Snacking Company Ltd | Manufacturing | 2021 |
| THE Repton Family of Schools Limited | Education | 2006 |
| THE Repton Literary Festival Limited | Arts & recreation | 2017 |
| THE Rhema Pentecostal Church Ltd | Other services | 2016 |
| THE Ridge Estate Management Company Ltd | Households | 2008 |