| Best Homeware Ltd | Wholesale & retail | 2014 |
| Best in Convenience Limited | Wholesale & retail | 2020 |
| Best Kept Hair Ltd | Professional & scientific | 2019 |
| Best Partnership Services Limited | Other services | 1995 |
| Best Retail Group Ltd | Wholesale & retail | 2021 |
| Best Ultrasonic Cleaners Limited | Professional & scientific | 2019 |
| BESTSELLS4U Ltd | Wholesale & retail | 2024 |
| Beswick Horticultural Limited | Other services | 2020 |
| Beth Grundy Limited | Other services | 2023 |
| Better Assistance Ltd. | Financial services | 2023 |
| Better Bathrooms (Merseyside) Limited | Construction | 2009 |
| Better Health for Life CIC | Education | 2025 |
| BETTER2GETHER Community Support CIC | Health & social care | 2024 |
| Betty Support Services Ltd | Health & social care | 2017 |
| Beverley Chiropody Clinic Limited | Health & social care | 2011 |
| Bexan Limited | Administrative & support | 2005 |
| Bexford Harrington Ltd | Administrative & support | 2025 |
| Beyond Boundries Limited | Information & communication | 2020 |
| Beyond Clinics Adhd Limited | Health & social care | 2025 |
| Beyond the Looking Glass Photography Ltd | Professional & scientific | 2019 |
| Beyoot Ltd | Construction | 2022 |
| BFC Constructions Ltd | Construction | 2023 |
| Bfdt Builders Holdings Limited | Financial services | 2018 |
| Bfdt Builders Limited | Construction | 2017 |
| Bfme Ltd. | Wholesale & retail | 2018 |
| BFS Online Ltd | Wholesale & retail | 2013 |
| BG Exports Company Ltd | Wholesale & retail | 2025 |
| BGJ 24 Limited | Real estate | 2024 |
| BGR Build Ltd | Professional & scientific | 2020 |
| Bgsa Developments Ltd | Construction | 2009 |
| Bgsa Property Holdings Limited | Financial services | 2011 |
| Bgsa Property Limited | Real estate | 2011 |
| BH Beauty Salon Ltd | Other services | 2026 |
| BH Direct Limited | Wholesale & retail | 2024 |
| BH Upholstery Ltd | Wholesale & retail | 2020 |
| Bhatt Squared Limited | Transport & logistics | 2025 |
| Bhatti Fabrics Limited | Wholesale & retail | 2024 |
| Bhatti Foods Limited | Hospitality | 2024 |
| Bhatti Foods Store Ltd | Wholesale & retail | 2026 |
| Bhatti Halal Meat Ltd | Wholesale & retail | 2026 |
| Bhatti Halal Meat Oldham Limited | Wholesale & retail | 2021 |
| Bhatti Travel Ltd | Administrative & support | 2019 |
| Bhattii Ventures Ltd | Wholesale & retail | 2026 |
| BHD Imports Oldham Limited | Wholesale & retail | 2025 |
| Bhdb Associates Ltd | Administrative & support | 2016 |
| Bhdb Properties Ltd | Real estate | 2021 |
| Bhdnj Ltd | Wholesale & retail | 2025 |
| BHF Limited | Hospitality | 2024 |
| BHM Heritage Properties Ltd | Real estate | 2026 |
| BHM Smiles Ltd | Health & social care | 2019 |
| BHW Holdings Limited | Financial services | 2020 |
| BI Agility Ltd | Information & communication | 2013 |
| BI Auditing Services Limited | Professional & scientific | 2025 |
| BIA Investments Limited | Households | 2021 |
| Bianca Fine Linens Company Limited | Wholesale & retail | 2020 |
| Biarma Ltd | Administrative & support | 2024 |
| Bibis Cullum ST Limited | Hospitality | 2024 |
| Bibu Brands Limited | Wholesale & retail | 2020 |
| Bid&Bliss Ltd | Wholesale & retail | 2025 |
| Bidcontent Ltd | Administrative & support | 2014 |
| Bidex Ventures Ltd | Health & social care | 2023 |
| Bienafashion Ltd | Wholesale & retail | 2024 |
| Bifka Security Services Limited | Administrative & support | 2021 |
| Big B&A Cleaning Services Ltd | Administrative & support | 2024 |
| Big Bull Digital Printing Solutions Ltd | Manufacturing | 2016 |
| Big FAT Breakers Ltd | Wholesale & retail | 2025 |
| Big Safe Self Storage Ltd | Real estate | 2024 |
| Big Shaak Ltd | Wholesale & retail | 2023 |
| Big Top Limited | Real estate | 2005 |
| Big W Traders Limited | Wholesale & retail | 2019 |
| Bigger Bang Creative Ltd | Arts & recreation | 2014 |
| Biggs Access ALL Areas NW Limited | Construction | 2025 |
| Biglord Properties Limited | Real estate | 2025 |
| Bikeanics Limited | Other services | 2013 |
| Bikes & Beyond Limited | Wholesale & retail | 2010 |
| Biking Factory Shop Ltd | Wholesale & retail | 2011 |
| Bilalstudiosuk Ltd | Manufacturing | 2022 |
| Bilash (NW) Ltd | Hospitality | 2022 |
| Bilkan Motors Ltd | Wholesale & retail | 2026 |
| Bill Tradings Ltd | Professional & scientific | 2013 |
| Billal Construction Limited | Construction | 2025 |
| Billingtons Ltd | Administrative & support | 2022 |
| Bills Customs Ltd | Wholesale & retail | 2023 |
| Billy Autos Oldham Ltd | Wholesale & retail | 2023 |
| Billy's Carpets Ltd | Wholesale & retail | 2024 |
| Billy's Minimarket Ltd | Wholesale & retail | 2023 |
| Bilmopac Consultants Ltd | Professional & scientific | 2025 |
| Bilsha Limited | Information & communication | 2016 |
| Bimij Beauty Palace Limited | Wholesale & retail | 2026 |
| Bimttts Ltd | Health & social care | 2021 |
| BIN Karim Ltd | Wholesale & retail | 2026 |
| BIN Saeed Logistics UK Ltd | Transport & logistics | 2026 |
| BIN Saeed Trading UK Ltd | Wholesale & retail | 2026 |
| Binky BOO Holdings Limited | Real estate | 2021 |
| Bintelligent Ltd | Professional & scientific | 2013 |
| BIR Real Estate Ltd | Real estate | 2023 |
| Birch Groundworks and Civils Limited | Construction | 2014 |
| Birch Hill Property Limited | Construction | 2024 |
| Birchcroft Limited | Professional & scientific | 2017 |
| Birches Littleborough Ltd | Households | 2024 |