| 100 Nine Design Limited | Professional & scientific | 2007 |
| 1102 Ltd | Transport & logistics | 2022 |
| 115CR (150) Limited | Extraterritorial | 2002 |
| 141PRODUCTS Ltd | Wholesale & retail | 2020 |
| 1972 Ltd | Wholesale & retail | 2019 |
| 1NGR3D Ltd | Other services | 2018 |
| 1PIXELMORE Ltd | Information & communication | 2015 |
| 2 Go Express Ltd | Transport & logistics | 2021 |
| 22 Beauty Ltd | Other services | 2024 |
| 24 Fit C.I.C. | Health & social care | 2015 |
| 24 Hour Fitness Limited | Arts & recreation | 2012 |
| 24HOURS Rapid Response Plumber Limited | Construction | 2025 |
| 24TEN Ltd | Transport & logistics | 2024 |
| 252 Haydons Road Limited | Real estate | 2022 |
| 2D Electrical Ltd | Construction | 2025 |
| 2ND Wave Films Limited | Information & communication | 2004 |
| 2PLUS3PROPERTY Limited | Real estate | 2016 |
| 360 Imagery Ltd | Professional & scientific | 2015 |
| 360 Investments (UK) Ltd | Real estate | 2018 |
| 360 Studio Ltd | Professional & scientific | 2025 |
| 3G Auto Limited | Manufacturing | 2013 |
| 3H Pharmacies Ltd | Health & social care | 2010 |
| 4 Education Group Ltd | Education | 2026 |
| 40SEVEN Limited | Other services | 2005 |
| 444 the Studio Ltd | Other services | 2025 |
| 484 Stanton Road Residents Limited | Households | 2019 |
| 4MG Solutions Ltd | Information & communication | 2013 |
| 5 TEN Taxis Limited | Transport & logistics | 2017 |
| 53 Residential Limited | Real estate | 2016 |
| 57 Cars Ltd | Transport & logistics | 2021 |
| 5TEN Contracts Limited | Transport & logistics | 2012 |
| 777 MOT Ltd | Wholesale & retail | 2015 |
| 90 Degree Interior Solutions Limited | Manufacturing | 2023 |
| A & a Stars Limited | Wholesale & retail | 2026 |
| A & J Bagnall Properties Limited | Construction | 2007 |
| A & S Homes (Nottingham) Ltd | Real estate | 2026 |
| A & S Kitchens (Nottingham) Ltd | Construction | 2026 |
| A & T Commercial Limited | Real estate | 2013 |
| A C S Automation & Control Services Limited | Manufacturing | 2008 |
| A G Wallis Group Limited | Professional & scientific | 2024 |
| A Handyman CAN Ltd | Construction | 2011 |
| A Investments Ltd | Wholesale & retail | 2022 |
| A M Car Solutions Limited | Wholesale & retail | 2018 |
| A N Cleaning Services Limited | Administrative & support | 2025 |
| A R Mercer Holdings Ltd | Financial services | 2018 |
| A Travels Ltd | Administrative & support | 2023 |
| A&A Sunbeds Ltd | Other services | 2022 |
| A&B Medical Services Limited | Health & social care | 2025 |
| A&BSHOP79 Ltd | Other services | 2026 |
| A&N Beautician Services Ltd | Other services | 2024 |
| A&N Media Solutions Limited | Professional & scientific | 2024 |
| A&R Investing Ltd | Real estate | 2019 |
| A. Thompson Engineering Ltd | Administrative & support | 2005 |
| A.A. Bramall (Leeds) Limited | Real estate | 1957 |
| A.A. Bramall Holdings Limited | Financial services | 1984 |
| A.A.Bramall Limited | Wholesale & retail | 1956 |
| A.I. Global Media Limited | Information & communication | 2010 |
| A.J.Francis Flooring Ltd | Construction | 2005 |
| A.Spurrier Construction Ltd | Construction | 2022 |
| A10 Indie Ltd | Information & communication | 2026 |
| A38 Independent Service Ltd | Wholesale & retail | 2025 |
| AA Building & Maintenance Limited | Construction | 2018 |
| AA Home Deco Limited | Real estate | 2025 |
| Aa&R Builders Limited | Construction | 2025 |
| AAA+ Property Management Ltd | Real estate | 2024 |
| Aadr Properties Ltd | Real estate | 2017 |
| AAF Medical Limited | Health & social care | 2026 |
| Aaina Wellness CIC | Health & social care | 2025 |
| Aamp Services Ltd | Construction | 2025 |
| Aarna Health Limited | Health & social care | 2011 |
| Abacus Bloodstock LLP | | 2009 |
| Abacus Quality Care Ltd. | Health & social care | 2010 |
| Abbasi Investments Group Limited | Financial services | 2021 |
| Abbasi Properties Group Ltd | Real estate | 2023 |
| Abbey Cars Ltd | Transport & logistics | 2022 |
| Abbey Law Solicitors Ltd | Professional & scientific | 2026 |
| ABC Cumpana Ltd | Transport & logistics | 2018 |
| ABC Training Services Limited | Other services | 2006 |
| Abdul Hassan Ltd | Transport & logistics | 2025 |
| Abdullah Mohid Limited | Health & social care | 2024 |
| Aberton Ltd | Manufacturing | 2021 |
| ABI Logistics and Transport Ltd | Transport & logistics | 2024 |
| Abiljo Limited | Manufacturing | 1999 |
| Abixy Limited | Health & social care | 2025 |
| ABO Plant Hire Ltd | Construction | 2001 |
| Abstract Beauty Ltd | Other services | 2020 |
| Abzino Transports Ltd | Wholesale & retail | 2023 |
| AC Security Consulting Limited | Information & communication | 2018 |
| Accountants & Business Consultants Limited | Professional & scientific | 2010 |
| Ace Trading Club Limited | Information & communication | 2025 |
| Achamore Ltd | Wholesale & retail | 2014 |
| ACM Retail Ltd | Wholesale & retail | 2023 |
| Acorn Building & Landscapes Ltd | Construction | 2022 |
| Acorn Children's Home (Burton) Ltd | Health & social care | 2013 |
| Acorn Sporting Ltd | Arts & recreation | 2022 |
| Acquie Consulting Ltd | Professional & scientific | 2016 |
| ACRE63 Ltd | Professional & scientific | 2025 |
| Active Fleet Solutions Limited | Extraterritorial | 2007 |
| Acuhealth Limited | Health & social care | 2003 |
| ACV Shop Ltd | Wholesale & retail | 2024 |