| ASH Trees (Healthcare) Limited | Wholesale & retail | 2005 |
| ASH Trees Holdings (Carnforth) Limited | Wholesale & retail | 2017 |
| Ashford House Property Management Company (Silverdale) Limited | Households | 2018 |
| Ashlea Landscaping Holdings Limited | Professional & scientific | 2010 |
| Ashlea Trustee Limited | Professional & scientific | 2010 |
| Ashwood Court Management Company Limited | Households | 1997 |
| Aspireagencyuk Ltd | Administrative & support | 2023 |
| ATE Foods Ltd | Wholesale & retail | 2020 |
| Athena Small Business Accountants Ltd | Professional & scientific | 2013 |
| Attainable Business Solutions Limited | Information & communication | 2013 |
| Autoparts (Cumbria) Limited | Wholesale & retail | 1991 |
| Aviation Regulatory and Training Solutions Limited | Education | 2019 |
| Avola Property Ltd | Real estate | 2018 |
| Awarenessworks Limited | Education | 2020 |
| Awts Ltd | Wholesale & retail | 2023 |
| B Bay Consultancy Ltd | Information & communication | 2024 |
| B M Welding & Fabrication (NW) Ltd | Manufacturing | 2023 |
| B.I.K Systems Ltd | Construction | 2024 |
| Back Lane (Ingleton) Management Company Ltd | Households | 2023 |
| Baines Plumbing & Heating Limited | Construction | 2017 |
| Bainsbeck Farms Ltd | Manufacturing | 2017 |
| Bankfield House 1909 Ltd | Hospitality | 2025 |
| Barden Biomass Holdings Limited | Financial services | 2017 |
| Barden Biomass Limited | Manufacturing | 2016 |
| Barden Environmental Limited | Administrative & support | 2025 |
| Bare Lane Limited | Other services | 2026 |
| Bark and Woof Cottage Ltd | Hospitality | 2008 |
| Barkley Limited | Professional & scientific | 2017 |
| Barn Electrical Solutions Limited | Construction | 2019 |
| Barnett Brickwork Limited | Construction | 2022 |
| Baron Property Management Ltd | Real estate | 2021 |
| Barry Robinson Leisure Limited | Hospitality | 1979 |
| Barton Farming Ltd | Agriculture & fishing | 2014 |
| Baseline Pickleball Limited | Wholesale & retail | 2024 |
| BAT 2 Limited | Wholesale & retail | 2009 |
| Battersbys Silver Grey Limited | Transport & logistics | 2015 |
| Bay Energy and Electrical Ltd | Construction | 2026 |
| Bay Lakes Accommodation Limited | Hospitality | 2022 |
| Bay Lettings Ltd | Hospitality | 2023 |
| Bay Oils Limited | Water & waste | 2001 |
| Bay Technics Limited | Construction | 1992 |
| Bay Veteran's Association CIC | Health & social care | 2023 |
| Bay View Gardens Limited | Wholesale & retail | 2017 |
| Baylettingsandrenovations Ltd | Real estate | 2023 |
| Baymix Limited | Construction | 2012 |
| BE the Best Limited | Professional & scientific | 2005 |
| Beastmaker Ltd | Manufacturing | 2011 |
| BEAUTY@99 Ltd | Other services | 2013 |
| Beckside Properties (NW) Ltd | Real estate | 2026 |
| Becnal Limited | Administrative & support | 2019 |
| Bee's Knees Exterior Cleans Ltd | Administrative & support | 2026 |
| Beech Lynette Ltd | Hospitality | 2018 |
| Belaside Investments Ltd | Professional & scientific | 2017 |
| Belgarvm Limited | Administrative & support | 2013 |
| Belle VUE House Assessment Centre Limited | Health & social care | 2010 |
| Beroncrest Limited | Real estate | 1996 |
| Bespoke & Unique Ltd | Construction | 2025 |
| Better 2 Know Limited | Health & social care | 2011 |
| BETTER2KNOW Holdings Limited | Financial services | 2023 |
| BETTER2KNOW International Limited | Health & social care | 2014 |
| Betterdotbusiness Limited | Administrative & support | 2020 |
| Bevan Homes Limited | Real estate | 2017 |
| Bexpoles Ltd | Arts & recreation | 2021 |
| BH Labs Limited | Information & communication | 2023 |
| Bibby's of Ingleton Limited | Transport & logistics | 1991 |
| Bigginswood Physiotherapy Ltd | Health & social care | 2021 |
| Billing Investments Limited | Financial services | 2005 |
| Bingley Engineering Limited | Manufacturing | 2004 |
| Biomed Clinics Ltd | Health & social care | 2022 |
| Bittern Countryside Community Interest Company | Other services | 2007 |
| BL Oils Limited | Water & waste | 2000 |
| BL Sports Nutrition Ltd | Health & social care | 2025 |
| Black Sheep Ironworks Limited | Manufacturing | 2002 |
| Blackline Fabrications Ltd | Manufacturing | 2025 |
| Blackstone Point Limited | Real estate | 2026 |
| BLP26 Ltd | Hospitality | 2025 |
| Blue Brick UK Ltd | Professional & scientific | 2007 |
| Blue Light Lettings Limited | Real estate | 2013 |
| Bluescape Developments Limited | Real estate | 2020 |
| Boddy Environmental Ltd | Professional & scientific | 2024 |
| Body Foods Limited | Wholesale & retail | 1998 |
| Bondax Limited | Arts & recreation | 2014 |
| Bondequal Limited | Real estate | 1993 |
| Booth INT Transport Limited | Transport & logistics | 2015 |
| Border Sales Ltd. | Wholesale & retail | 2001 |
| Borwick Mews Management Company Limited | Households | 2010 |
| Bottoms Barns Silverdale Management Company Limited | Other services | 2002 |
| Bowland Properties Limited | Real estate | 2024 |
| Brackenthwaite Holidays Limited | Hospitality | 2022 |
| Brand ID Ltd | Manufacturing | 2024 |
| Bravo Power Ltd | Construction | 2017 |
| Brian Dandy Roofing Limited | Construction | 2025 |
| Brian Hughes Plant Ltd | Construction | 2007 |
| Briar LEA (Nether Kellet) Management Company Limited | Households | 2019 |
| Brick and Birch Limited | Construction | 2019 |
| Bridlington Links Golf and Leisure Estate Limited | Hospitality | 2007 |
| Bronco and Barrel Limited | Wholesale & retail | 2025 |
| Browns Farm Holiday Park Ltd | Hospitality | 2024 |
| Builders Supply (North West) Limited | Wholesale & retail | 1975 |
| Built.Works Ltd | Professional & scientific | 2018 |