| Blue FOX Electrical Ltd | Construction | 2025 |
| Blue Sky Dent Ltd | Real estate | 2021 |
| Blue Sky Failsworth Ltd | Real estate | 2024 |
| Blue Star Foods (NW) Ltd | Wholesale & retail | 2005 |
| Bluechip Construction Ltd | Construction | 2017 |
| Blueopia Limited | Real estate | 2010 |
| Bluestone Legal Limited | Professional & scientific | 2023 |
| Blusun Limited | Real estate | 2011 |
| Bncy Music Limited | Information & communication | 2022 |
| Bngrd Ltd | Other services | 2026 |
| BOB on Tools Ltd | Construction | 2024 |
| Boddywear Ltd | Wholesale & retail | 2025 |
| Boddywork Ltd | Administrative & support | 2025 |
| Boldlawn Limited | Health & social care | 1983 |
| Bonnerdale Limited | Real estate | 1999 |
| Bonsall Developments Ltd | Real estate | 2025 |
| Boomtown Installations Ltd | Construction | 2023 |
| Boost Sports Camps Limited | Administrative & support | 2023 |
| Boss Home Interiors Ltd | Wholesale & retail | 2025 |
| Boss Scran Limited | Hospitality | 2025 |
| Botley Optical Limited | Health & social care | 1998 |
| Bowen & Leeming Optical Limited | Wholesale & retail | 2020 |
| Bowland Trading Ltd | Wholesale & retail | 2003 |
| Boxwood Collections (UK) Ltd | Other services | 2010 |
| Boyden-Hare Limited | Health & social care | 2015 |
| Bradley's Decor Limited | Construction | 2022 |
| Brain Health Breakthrough CIC | Other services | 2018 |
| Brandshouse Ltd | Administrative & support | 2011 |
| Bread+Bones CIC | Hospitality | 2025 |
| Brewschetta Cafe by the River Ltd | Hospitality | 2014 |
| Bricks and Mortar (Darwen) Limited | Real estate | 2025 |
| Bridge & Co (Darwen) Ltd | Real estate | 2011 |
| Bridgewater Estates (Macc) Limited | Real estate | 2018 |
| Bridgewater Estates (Nags Head) Limited | Real estate | 2021 |
| Bridgewater Estates Ltd | Real estate | 2009 |
| Bright Hearing Ltd | Wholesale & retail | 2018 |
| Bright Little Learners Limited | Education | 2026 |
| Brij Commodity UK Limited | Wholesale & retail | 2011 |
| Bristol Taxis & Cabs Ltd | Transport & logistics | 2026 |
| Broadhurst Optometrists Limited | Health & social care | 1993 |
| Bromley Cross Physiotherapy Clinic Ltd | Health & social care | 2003 |
| Brookcamp Ltd | Transport & logistics | 2022 |
| Brooklyn Holdings Limited | Financial services | 2015 |
| Brooks Gate Limited | Real estate | 2024 |
| Brosgill Eyewear Limited | Administrative & support | 2009 |
| Broughton Oakstone Ltd | Agriculture & fishing | 2025 |
| Brownbills Optometrists Ltd | Wholesale & retail | 2013 |
| Browne's Hearing Solutions Limited | Wholesale & retail | 2021 |
| Brownhill Corporate Hire (NW) Ltd | Transport & logistics | 2025 |
| Brownhill Corporate Hire Ltd | Transport & logistics | 2019 |
| Brownlow Consulting Limited | Professional & scientific | 2002 |
| Brownlow Fiduciary Ltd | Professional & scientific | 2021 |
| Bruce Avery Limited | Health & social care | 2005 |
| BS Breakdown & Recovery Lancashire Ltd | Transport & logistics | 2020 |
| BSM Joinery and Building Contractors Ltd | Construction | 2013 |
| BSN Consultancy Ltd | Professional & scientific | 2024 |
| BTK Fabrication Ltd | Manufacturing | 2026 |
| Buckley Eyecare Limited | Wholesale & retail | 2006 |
| Buckshaw Village Nursery Limited | Education | 2011 |
| Buckthorn Gardens Management Company Limited | Households | 2025 |
| Building Surveying Services Ltd | Construction | 2026 |
| Bulkmart Ltd | Wholesale & retail | 2025 |
| Bulkmart Midlands Ltd | Wholesale & retail | 2025 |
| Bull and Tomato Games Ltd. | Other services | 2020 |
| Bunker Optical Limited | Wholesale & retail | 2026 |
| Buraq Holdings Limited | Financial services | 2024 |
| Burgerlabuk Ltd | Hospitality | 2025 |
| Bury Hot Desking Limited | Real estate | 2016 |
| Bush the Opticians Ltd | Wholesale & retail | 2007 |
| BUX Holdings Ltd | Financial services | 2021 |
| Bvsmnt Ltd | Hospitality | 2023 |
| BWD Property Maintenance Ltd | Construction | 2025 |
| BY Erin Cards and Gifts Ltd | Wholesale & retail | 2012 |
| Bycs Ltd | Construction | 2014 |
| Byroad Ltd | Transport & logistics | 2010 |
| C & S Optical Limited | Wholesale & retail | 2024 |
| C and C Cables Limited | Wholesale & retail | 2014 |
| C Jones Paving & Fencing Ltd | Construction | 2023 |
| C Otley Services Ltd | Construction | 2020 |
| C&H Optical Limited | Health & social care | 2008 |
| C.A. Raison Optica Limited | Wholesale & retail | 2002 |
| C.A.T.S. (Opticians) Limited | Wholesale & retail | 1987 |
| C.J. Packford (Optician) Limited | Wholesale & retail | 1979 |
| C.L.P Engineering and Site Services Ltd | Professional & scientific | 2021 |
| C.N.O Holdings Ltd | Financial services | 2022 |
| C.P.T. Holdings Limited | Professional & scientific | 2000 |
| Cablecom Northwest Limited | Construction | 2025 |
| Calderwood (Developments) Ltd | Construction | 2005 |
| Camella Healthcare Limited | Wholesale & retail | 2011 |
| Camera Tower Engineering Limited | Manufacturing | 2005 |
| Cameron Beaumont Ltd | Health & social care | 2007 |
| Campbell & Mcdearmid Optometrists Ltd | Wholesale & retail | 2011 |
| Cams Performance Limited | Wholesale & retail | 2014 |
| Can'T Well Retire Boat Vacations Limited | Hospitality | 2021 |
| Candy Box Coffee Ltd | Wholesale & retail | 2015 |
| Canhear Audiology Limited | Wholesale & retail | 2024 |
| Cantonese Kitchen (Darwen) Limited | Hospitality | 2012 |
| Canvasdesignuk Ltd | Manufacturing | 2026 |
| Cappuccino @ Buckshaw Limited | Hospitality | 2020 |
| Cardiff Hearing Limited | Manufacturing | 2013 |