| Beard Engineering Co. Limited(The) | Manufacturing | 1955 |
| Beaumond House Trading Limited | Professional & scientific | 1994 |
| Beauty at the Barn Ltd | Other services | 2007 |
| Beauty Spree Limited | Other services | 2022 |
| Beechgate Limited | Real estate | 1999 |
| Beechward Limited | Wholesale & retail | 1985 |
| Beeley Hawley & Co Ltd | Professional & scientific | 2003 |
| Beeston Chiropractic Clinic Limited | Health & social care | 2004 |
| Bell Landscaping Limited | Construction | 2003 |
| Bellamy Consulting Limited | Information & communication | 2007 |
| Belvedere Contracts Limited | Construction | 2020 |
| Belvedere Properties Limited | Real estate | 2019 |
| BEN Turner Personal Trainer & Fitness Coach Limited | Other services | 2023 |
| Benoy (North America) Limited | Professional & scientific | 2022 |
| Bilsthorpe Miners' Welfare Limited | Hospitality | 1992 |
| Birkin Homes Limited | Real estate | 2015 |
| Bjal Land and Property Ltd | Construction | 2023 |
| Black Geko Limited | Professional & scientific | 2007 |
| Blissful Asia Massage Ltd | Other services | 2021 |
| Blooming Wonderful Limited | Wholesale & retail | 2002 |
| Blumax Metal Finishers Limited. | Manufacturing | 2001 |
| BMR Ventilation and Air Conditioning Ltd | Construction | 2004 |
| Boons Ltd | Other services | 2005 |
| Boots Benevolent Fund | Professional & scientific | 1995 |
| Boots International Limited | Wholesale & retail | 2000 |
| Branard Limited | Real estate | 1977 |
| Branston Park Resort Ltd | Real estate | 2020 |
| Breathing Space Developments Ltd | Real estate | 1999 |
| Bretton Caterers Limited | Hospitality | 2003 |
| Brian Matthew Limited | Information & communication | 2024 |
| Bridge House Engineering Limited | Professional & scientific | 2006 |
| Bromley House Library | Arts & recreation | 1997 |
| Brunton Shaw UK Limited | Manufacturing | 2000 |
| Bucknall Counselling and Collection Services Ltd | Financial services | 2006 |
| Bunting Enterprises Limited | Professional & scientific | 2002 |
| Butler Brothers Limited | Transport & logistics | 1991 |
| C J Ward Joinery Manufacturer Limited | Manufacturing | 2006 |
| C N G Designed Interiors Limited | Manufacturing | 2002 |
| C. B. Land Consultancy Limited | Real estate | 1996 |
| C.P.S. (Contractors) Limited | Construction | 1987 |
| Cabin Hill Sawmill Limited | Manufacturing | 2007 |
| Campions Hairdressing (Mansfield) Ltd | Other services | 2000 |
| Capital Estate Services Ltd | Real estate | 2003 |
| Capla Investments Limited | Real estate | 2001 |
| Capstan Trade Limited | Wholesale & retail | 2026 |
| Carlton Building & Construction Limited | Real estate | 2004 |
| Carp (UK) 1 Limited | Professional & scientific | 2000 |
| Casa ROW Ltd | Real estate | 2025 |
| Cassells Industrial Products Limited | Wholesale & retail | 1994 |
| CCL Refrigeration Limited | Construction | 2003 |
| CDC Technical Services Ltd | Construction | 2006 |
| Cedars Vets Ltd | Professional & scientific | 2008 |
| Center Parcs (Operating Company) Limited | Professional & scientific | 2002 |
| Center Parcs (UK) Group Limited | Professional & scientific | 2003 |
| Center Parcs Limited | Financial services | 1985 |
| Central Brick Supplies Limited | Wholesale & retail | 2022 |
| Centrepark Limited | Professional & scientific | 1985 |
| Certside Limited | Administrative & support | 1984 |
| Ceylon Tea Shop (UK) Limited | Wholesale & retail | 2024 |
| Challenge Team Limited | | 1982 |
| Champion Care Training Ltd | Health & social care | 2022 |
| Chandler Bros Ltd | Real estate | 2020 |
| Charles a. Towlson and Associates Limited | Wholesale & retail | 1997 |
| Charles Galaxy Enterprises Limited | Health & social care | 2013 |
| Chris Orwin Architectural Design Ltd | Professional & scientific | 2006 |
| Churchyard Consulting Ltd | Professional & scientific | 2024 |
| Cinch Connectors Limited | Manufacturing | 1987 |
| Cinderhill Physiotherapy Ltd | Health & social care | 2006 |
| Cireri Holdings Limited | Real estate | 1991 |
| Clarke Clothing UK Limited | Manufacturing | 2004 |
| Clayton's Wharf Management Company Limited | Households | 1997 |
| Claytons (Notts) Limited | Transport & logistics | 2023 |
| Clearcomm Group Limited | Information & communication | 2009 |
| Cleland Street (Gorbals) Limited | Administrative & support | 2001 |
| Clement Dobeler Limited | Real estate | 2003 |
| Clifton Hotel (Mansfield) Ltd | Hospitality | 2003 |
| Clipston Developments Limited | Real estate | 2003 |
| Clipstone Social Club Limited | Hospitality | 1992 |
| Cloud Sales Force Limited | Information & communication | 2006 |
| Coffee POT Publishing Ltd | Information & communication | 2022 |
| Colemans Kitchens & Bedrooms Limited | Manufacturing | 2003 |
| Colledges Butchers Limited | Manufacturing | 2003 |
| Comet Refico Limited | Professional & scientific | 2006 |
| Commercial Language Training Limited | Administrative & support | 2002 |
| Composite Properties Limited | Real estate | 1972 |
| Confidential Accounting Services (Nottm) Limited | Professional & scientific | 2003 |
| Consort Limited | Manufacturing | 1981 |
| Construction Services (Mansfield) Ltd | Construction | 2000 |
| Cooltek Limited | Information & communication | 2002 |
| Corsa Holdings Limited | Financial services | 2022 |
| Cotgrave Service Station Limited | Wholesale & retail | 1964 |
| Crest Industrial Limited | Wholesale & retail | 2002 |
| Crimson Tiger Limited | Extraterritorial | 2006 |
| CRS Plant & Agri Engineering Limited | Manufacturing | 2023 |
| Crtyx Holdings Limited | Information & communication | 2020 |
| Cscs (AW) Limited | Administrative & support | 2007 |
| D & G Joinery Services Limited | Construction | 2006 |
| D & R Shop Limited | Wholesale & retail | 2023 |
| D a Bradley Limited | Real estate | 2003 |
| D B Solutions (UK) Limited | Manufacturing | 2006 |