| Beau Bakers Co Ltd | Wholesale & retail | 2021 |
| Beetec Electrical Services Limited | Construction | 2018 |
| Bella Bronze Tanning Salon Limited | Other services | 2019 |
| Belper Backpain Clinic Limited | Health & social care | 2007 |
| Belper Shed CIC | Other services | 2024 |
| Belper Technology Ltd | Information & communication | 2021 |
| Beraud Lettings Limited | Real estate | 2001 |
| Bernton Limited | Real estate | 1991 |
| Berzanchi Hair Ltd | Other services | 2026 |
| Best Filtered Water Ltd | Wholesale & retail | 2024 |
| Best Hand Car Wash (Ripley) Ltd | Administrative & support | 2025 |
| Betterweld Group Ltd | Professional & scientific | 2019 |
| BHG Investments Ltd | Financial services | 2019 |
| Big Bang Music Limited | Wholesale & retail | 2015 |
| Birch Building Consultancy Limited | Professional & scientific | 2019 |
| BK Auto's (Ripley) Ltd | Wholesale & retail | 2026 |
| BK Fitters Limited | Manufacturing | 2018 |
| BKB (Midlands) Ltd | Construction | 2021 |
| BKB Interiors Ltd | Construction | 2026 |
| Blitzblend Ltd | Wholesale & retail | 2026 |
| Block Plant Limited | Manufacturing | 1999 |
| Blossoming Lives UK | Education | 2020 |
| Blueearth Construction Limited | Construction | 2019 |
| Blueroom Developments Limited | Extraterritorial | 2004 |
| Body Count Company Limited | Wholesale & retail | 2024 |
| Booker Sparx Ltd | Construction | 2022 |
| Booth & Stirland Limited | Construction | 2003 |
| Bosco Engineering Limited | Manufacturing | 1983 |
| Boulton Properties Ltd | Real estate | 2017 |
| Bowrock UK Ltd | Professional & scientific | 2017 |
| Bretstone Properties Limited | Real estate | 1988 |
| Brewed Awakening Bar Limited | Hospitality | 2025 |
| Brewed Cellar Limited | Hospitality | 2025 |
| Brick Tinting Solutions Limited | Construction | 2012 |
| Bridges Home Improvements Ltd | Construction | 2015 |
| Bright Engineering Limited | Construction | 2026 |
| Briktop Properties Ltd | Real estate | 2025 |
| Britannia Collectables Limited | Wholesale & retail | 2009 |
| Broadwave Limited | Information & communication | 2014 |
| Brown Ales Limited | Hospitality | 2023 |
| Brown Ales PUB Company Limited | Hospitality | 2012 |
| Brown Group Holdings Limited | Financial services | 2021 |
| Brown PUB Group Ltd | Hospitality | 2026 |
| Brown's Equine Supplies Limited | Wholesale & retail | 2003 |
| BT Advice Group Ltd | Financial services | 2026 |
| Butterley Cafe Ltd | Hospitality | 2020 |
| Butterley Inns Limited | Hospitality | 2004 |
| Butterley Park Farm Barns Management Company Limited | Households | 2015 |
| BW Group Services Limited | Construction | 2020 |
| BW M&E Limited | Construction | 2013 |
| BW M&E Services Limited | Construction | 2024 |
| C Cleaning Solutions UK Limited | Administrative & support | 2025 |
| C J Shelley Limited | Construction | 2017 |
| C M Car Sales Limited | Wholesale & retail | 2014 |
| C W Lifting Ltd | Construction | 2021 |
| C.D.Sealants (Ripley) Limited | Construction | 2024 |
| Cables Direct Limited | Wholesale & retail | 1993 |
| Cadtec Limited | Information & communication | 2014 |
| Caglar İnvestment Ltd | Real estate | 2025 |
| Call the Accountant Ltd | Information & communication | 2022 |
| CAM PUB Co Ltd | Hospitality | 2017 |
| Campy's Construction Limited | Construction | 2018 |
| CAP Solutions UK Ltd | Transport & logistics | 2025 |
| Capella Capital (Parent Company) Limited | Financial services | 2019 |
| Capella Professional Limited | Administrative & support | 2019 |
| Car-Choice.Co.Uk Limited | Professional & scientific | 2003 |
| Caravel Press Limited | Information & communication | 2025 |
| Cartledge Holdings Limited | Financial services | 2023 |
| Castle Fields Codnor Management Company Limited | Real estate | 2015 |
| Castles Special Projects Limited | Wholesale & retail | 2011 |
| Cattermole Contractors Limited | Construction | 1988 |
| Catwoe Consulting Ltd | Professional & scientific | 2024 |
| CC Derby Limited | Hospitality | 2024 |
| CDM Managers UK Ltd | Construction | 2026 |
| CDP Haulage Limited | Transport & logistics | 2020 |
| Cempump (Holdings) Ltd | Financial services | 2020 |
| Cempump Ltd | Construction | 2012 |
| Ceylan Elbistan Ltd | Hospitality | 2017 |
| CG Transport Ltd | Transport & logistics | 2022 |
| Chadwick Care Ltd | Health & social care | 2019 |
| Chamelion Auto Refinish Limited | Wholesale & retail | 2004 |
| Chamrose Properties Limited | Real estate | 1998 |
| Charlota Management Services Ltd | Health & social care | 2014 |
| Chase Conveyors Ltd | Professional & scientific | 2018 |
| Chelcie Florence Limited | Other services | 2021 |
| Choltech Limited | Information & communication | 2013 |
| Chris Beardmore Home and Garden Improvements Limited | Construction | 2015 |
| Chris Howell Interims Ltd | Professional & scientific | 2014 |
| Chris Lunn Limited | Construction | 2024 |
| Chris W Roads Limited | Wholesale & retail | 1998 |
| Clarion Retail Solutions Limited | Professional & scientific | 2014 |
| Class a Fire & Security Limited | Administrative & support | 2003 |
| Class a Security Solutions Ltd | Construction | 2018 |
| Clearfirst Services Ltd | Administrative & support | 2003 |
| Clive Heard Motors Ltd | Wholesale & retail | 2024 |
| Cloud Business Communications Ltd | Information & communication | 2017 |
| Cloud Manufacturing Limited | Manufacturing | 2018 |
| Cloud Telematics LLP | | 2011 |
| Cloudbass Group Holdings Limited | Financial services | 2018 |
| Cloudbass Holdings Limited | Information & communication | 2009 |