| B3 Cost Consulting Limited | Construction | 2014 |
| Baba World Ltd | Professional & scientific | 2022 |
| Babafemi Oluwasegun Madariola Services Ltd | Transport & logistics | 2024 |
| Baboon Jack Direct Deliveries Limited | Transport & logistics | 2021 |
| Baby Bump and Beyond Photography Limited | Professional & scientific | 2024 |
| Baby, Scan and Beyond Limited | Other services | 2021 |
| Babylamb Limited | Professional & scientific | 2004 |
| Bach Developments Ltd | Construction | 2012 |
| Bacrover | Professional & scientific | 2026 |
| BAG & Bean Limited | Hospitality | 2015 |
| Bailey PUB Company Ltd | Administrative & support | 2016 |
| Baillie Farms Ltd | Agriculture & fishing | 2023 |
| Bakery Maintenance Services Support Limited | Manufacturing | 2026 |
| Balance 4 Your Life Ltd | Professional & scientific | 2023 |
| Balcarres Design and Development Limited | Real estate | 1989 |
| Baldwin Asset Management Group Limited | Financial services | 2024 |
| Baldwin Properties (NW) Ltd | Real estate | 2018 |
| Baldwins Cycles Limited | Wholesale & retail | 2014 |
| Baldwins Furniture Frames (Wigan) Ltd | Manufacturing | 2019 |
| Ballani Group Limited | Financial services | 2026 |
| Balmoral Bricklaying Limited | Construction | 2014 |
| BAM Environmental Consultancy Ltd | Professional & scientific | 2014 |
| Bama Properties Ashton Ltd | Real estate | 2020 |
| Bambambars Ltd | Hospitality | 2026 |
| Bamber's Concreting Services Ltd | Construction | 2025 |
| Bamboogle UK Ltd | Information & communication | 2025 |
| Bamboz Afro Markt Limited | Wholesale & retail | 2025 |
| Bamburgh Homes LLP | | 2012 |
| Band of Brothers Online Fitness Limited | Education | 2022 |
| Bandaru Limited | Health & social care | 2022 |
| Bandtana Ltd | Real estate | 2013 |
| Bane Wind Ltd | Manufacturing | 2013 |
| Bang Digital UK Ltd | Information & communication | 2023 |
| Banita Properties Ltd | Real estate | 2022 |
| Banitasports Limited | Arts & recreation | 2019 |
| Bankad Group Ltd | Real estate | 2022 |
| Bannister Works Limited | Construction | 2025 |
| Banya & Shashlik Limited | Hospitality | 2024 |
| Bar 59 Limited | Hospitality | 2024 |
| Baraka Products Limited | Wholesale & retail | 2013 |
| Barakat Market Ltd | Wholesale & retail | 2025 |
| Baran Bakery Ltd | Hospitality | 2024 |
| Barbara Dutton Educational Consultancy Limited | Education | 2017 |
| Barbara's of Standish Limited | Wholesale & retail | 2004 |
| Barber Hood Wigan Ltd | Other services | 2025 |
| Barbizon Freight Transport Ltd | Transport & logistics | 2024 |
| Barcino Meats Ltd | Wholesale & retail | 2022 |
| Bargain Brand Foods Online UK Ltd | Other services | 2018 |
| Barkley Dog Services Ltd | Other services | 2024 |
| Barks and Recreation Limited | Health & social care | 2015 |
| Barley Enterprises Limited | Other services | 2004 |
| Barn Feel Photography Ltd | Professional & scientific | 2024 |
| Barnfield Hair Saloon Ltd | Other services | 2019 |
| Barover | Professional & scientific | 2026 |
| Barr & Cott Holdings Ltd | Financial services | 2023 |
| Barracks Square Limited | Real estate | 2016 |
| Barricade Ltd | Manufacturing | 2009 |
| Barrington Capital Partners Limited | Real estate | 2013 |
| Barrow & Langley Limited | Real estate | 2025 |
| Barry Brown Limited | Wholesale & retail | 2002 |
| Barry Jones Demolition Limited | Construction | 1982 |
| Barry Maher MPS Services Limited | Other services | 2017 |
| Bartle Development Limited | Real estate | 2019 |
| Bartleby Developments Ltd | Real estate | 2013 |
| Barton Estates Limited | Hospitality | 2023 |
| Barton Point Limited | Financial services | 2025 |
| Barton's NW Limited | Wholesale & retail | 2006 |
| Bartons Yorkshire Limited | Wholesale & retail | 2023 |
| Bartox Aesthetics Ltd | Health & social care | 2018 |
| BAS Best Limited | Real estate | 2024 |
| Basben International Limited | Real estate | 2023 |
| Base Civil's Limited | Construction | 2015 |
| Basegrowth Limited | | 1987 |
| Bask Bar Stockport Ltd | Hospitality | 2016 |
| Basmati Spice Ltd | Hospitality | 2025 |
| Batan Property Limited | Real estate | 2023 |
| Bate Holdings Ltd | Financial services | 2016 |
| Bate Properties Ltd | Real estate | 2017 |
| Bate Scaffolding Services Limited | Construction | 2006 |
| Bateson Phoenix Ltd | Construction | 2021 |
| Bathroom World & Tiles Limited | Wholesale & retail | 2023 |
| Bathrooms With Bubbles & Dreams Limited | Wholesale & retail | 2006 |
| Bathtek North West Limited | Wholesale & retail | 2011 |
| Batley Property Services Limited | Real estate | 1998 |
| Battle & Brew CIC | Arts & recreation | 2025 |
| Bawtry Lodge Country Park Ltd | Real estate | 2023 |
| Baxter Grab & Tipper Hire Limited | Financial services | 2016 |
| Baxters Supplies Limited | Agriculture & fishing | 2015 |
| Baylock Ltd | Manufacturing | 2025 |
| Baz's Pizza Wigan Ltd | Hospitality | 2024 |
| Bazel Minerals Ltd | Mining & quarrying | 2025 |
| BB Foods Wigan Ltd | Hospitality | 2025 |
| Bbit Consultants Ltd | Information & communication | 2015 |
| BBJ Executive Properties Ltd | Real estate | 2025 |
| BBK Labelling and Coding Solutions Limited | Manufacturing | 2004 |
| BBT Asset Management Limited | Transport & logistics | 2017 |
| BCD Solutions Limited | Manufacturing | 2007 |
| BCH 1991 Holdings Limited | Real estate | 2021 |
| BCM Homes (NW) Limited | Real estate | 2025 |
| BCP Alpha 1 Limited | Real estate | 2013 |