| Bell Holdings Limited | Financial services | 2015 |
| Bell Hotel Burgh Ltd | Hospitality | 2020 |
| Bella King Design Limited | Professional & scientific | 2018 |
| Bellcoin Holdings Limited | Hospitality | 1985 |
| Bellcoin Limited | Professional & scientific | 1989 |
| Bells Bingo Limited | Professional & scientific | 1982 |
| Bembridge Management Limited | Professional & scientific | 2013 |
| Bennett's Mill Management Company Limited | Real estate | 2005 |
| Berkley Properties Ltd | Construction | 2003 |
| Berkley Properties Rentals Ltd | Real estate | 2008 |
| Berry Way Valeting Car Centre Ltd | Administrative & support | 2019 |
| Bespoke Garden Cabins Limited | Construction | 2025 |
| Biddall Leisure Limited | Hospitality | 2006 |
| Big Save Limited | Wholesale & retail | 2008 |
| BIO Clinic Ltd | Health & social care | 2023 |
| Birch (Lincs) Ltd | Construction | 2019 |
| Birch L & L Ltd | Agriculture & fishing | 2025 |
| Black & White Shoes Ltd | Wholesale & retail | 2023 |
| Black Orchid (Tattoo and Body Piercing) Limited | Wholesale & retail | 2003 |
| Blue Anchor Leisure Holdings Limited | Real estate | 2012 |
| Blue Anchor Leisure Limited | Hospitality | 1973 |
| BO8O Hotels Limited | Hospitality | 2025 |
| BO8O Management Ltd | Hospitality | 2026 |
| Boltons Lane Properties Limited | Real estate | 2008 |
| Bombay Darbar and Cuisine Ltd | Hospitality | 2026 |
| Bonnie Docherty and Hewitt Limited | Other services | 2013 |
| Boston Heating Limited | Wholesale & retail | 2011 |
| Boujee Beans Ltd | Manufacturing | 2023 |
| Bournlam Limited | Extraterritorial | 2012 |
| Brand Boost Media Ltd | Information & communication | 2025 |
| Brassica Solutions Ltd | Administrative & support | 2022 |
| Bray Design Limited | Manufacturing | 2009 |
| Brayford Hotel Grimsby Limited | Hospitality | 2013 |
| Brayford Hotel Hull Limited | Hospitality | 2016 |
| Brayford Hotel Lincoln Limited | Hospitality | 2010 |
| Brayford Hotels Holdings Ltd | Professional & scientific | 2010 |
| Brayford Hotels Limited | Real estate | 2008 |
| Brennans Logistics Ltd | Transport & logistics | 2023 |
| Brick & Wood Ltd | Real estate | 2026 |
| Bright Stars Play Space Ltd | Health & social care | 2021 |
| Britannia Lightning Prevectron Limited | Manufacturing | 1999 |
| Bromover Limited | Wholesale & retail | 2023 |
| Brown's Removals & Haulage Ltd | Transport & logistics | 2025 |
| Brthrhood Ltd | Wholesale & retail | 2025 |
| BSB Autos Limited | Wholesale & retail | 2010 |
| Bucknall House Management Company Limited | Real estate | 2015 |
| Budgetkicks Ltd | Wholesale & retail | 2024 |
| Bungalow Bargains Ltd | Wholesale & retail | 2026 |
| Burgh LE Marsh Sports Field Ltd | Arts & recreation | 2025 |
| Burgh Pastures Limited | Construction | 2023 |
| Burgh Town FC Ltd | Arts & recreation | 2025 |
| Burnt Offerings Ltd | Other services | 2024 |
| Burton Powerlines Ltd | Energy | 2025 |
| BW Industries (Lincs) Limited | Agriculture & fishing | 2021 |
| C & S Chamberlain Limited | Construction | 2003 |
| C & S Khaira Stores Limited | Transport & logistics | 2006 |
| C J H Civils Limited | Wholesale & retail | 2018 |
| C Swift Services Ltd | Real estate | 2023 |
| C&C Custom Gifts Ltd | Wholesale & retail | 2021 |
| C.W.Parker(Wainfleet)Limited | Agriculture & fishing | 1951 |
| Camlodge Limited | Wholesale & retail | 2025 |
| Captain Bluebell's Farm Limited | Hospitality | 2014 |
| Captains Co (Lincs) Limited | Administrative & support | 2024 |
| Care for Your Life (Fair Haven) Limited | Health & social care | 2015 |
| Care for Your Life - ST Clare's Limited | Health & social care | 2018 |
| Care for Your Life Ltd | Health & social care | 2012 |
| Care Necessities Limited | Other services | 2016 |
| Careshaw Ltd | Health & social care | 2019 |
| Carl Drury Limited | Water & waste | 2016 |
| Carling Leisure Limited | Hospitality | 2022 |
| Carlton Yarmouth Limited | Hospitality | 2025 |
| Carpathian Research Group Ltd | Professional & scientific | 2020 |
| Carpet and Vinyl Warehouse Limited | Wholesale & retail | 2023 |
| Cass Williams Investments Limited | Real estate | 2023 |
| Castaways Leisure Limited | Hospitality | 2008 |
| CCB Aviation Products Ltd | Education | 2018 |
| CDL Fencing Ltd | Construction | 2019 |
| CEK First Ltd | Hospitality | 2026 |
| Cern Consulting Ltd | Professional & scientific | 2018 |
| CES Rentals Limited | Real estate | 2023 |
| CF Discounts Furniture Ltd | Wholesale & retail | 2025 |
| CFC Leisure Ltd | Wholesale & retail | 2013 |
| CFN Hassall Limited | Administrative & support | 2025 |
| CFN Packaging Group Limited | Manufacturing | 1988 |
| Chaggar Squared Limited | Real estate | 2023 |
| Change Your Future Therapy Ltd | Health & social care | 2021 |
| Chapel Point Pleasure Limited | Hospitality | 1986 |
| Chase Vintage Ltd | Wholesale & retail | 2025 |
| Chelsea Hotel Ltd | Hospitality | 2024 |
| Chenjia Skegness Limited | Hospitality | 2021 |
| Cherished Memories Studio Ltd | Wholesale & retail | 2026 |
| Cherry LEA Holdings Limited | Financial services | 2018 |
| Chicktin Creations Limited | Arts & recreation | 2018 |
| Chiefield Limited | Professional & scientific | 1985 |
| Chilli Wizards Lincolnshire Ltd | Hospitality | 2023 |
| Chilton Leisure Limited | Hospitality | 2015 |
| Chloe Clarke Ltd | Professional & scientific | 2020 |
| Chocolate Graphics (UK) Limited | Manufacturing | 2003 |
| Chris Lawie Cropspraying Ltd | Agriculture & fishing | 2003 |
| Chunky Chips Ingoldmells Ltd | Wholesale & retail | 2019 |