| Aras Gonulcan Ltd | Real estate | 2026 |
| Arcami Properties Ltd | Real estate | 2017 |
| Arctic Discovery Limited | Information & communication | 1998 |
| Ardent Renovations Limited | Real estate | 2024 |
| Ardent Safety Ltd | Education | 2021 |
| Armistead's Eggs Limited | Agriculture & fishing | 2021 |
| Arnolds Convenience Store Limited | Wholesale & retail | 2016 |
| Art Carpet UK Ltd | Wholesale & retail | 2021 |
| ASB Corporation Limited | Wholesale & retail | 2014 |
| Ashi & Remi UK Ltd | Wholesale & retail | 2020 |
| ASK Prestige Cars Ltd | Transport & logistics | 2016 |
| Askam Pier Limited | Extraterritorial | 2024 |
| Askew Electrical Ltd | Construction | 2006 |
| Atbus Limited | Transport & logistics | 2006 |
| Atkinson Financial Services Limited | Financial services | 2019 |
| Atlas Fire Solutions Ltd | Public administration | 2025 |
| Attraction Power Ltd | Construction | 2025 |
| Attuned Education Limited | Education | 2010 |
| Aurora Medical Aesthetics Ltd | Other services | 2024 |
| Authorised Turbine Technicians Ltd | Manufacturing | 2022 |
| Autoimage Cars Limited | Administrative & support | 2011 |
| Autoworks (CA1) Limited | Wholesale & retail | 2015 |
| Autus Cumbria Limited | Health & social care | 2014 |
| Avenor Consulting Ltd | Construction | 2024 |
| Awaken Adventure Travel Limited | Administrative & support | 2022 |
| Axis Laser Ltd | Manufacturing | 2022 |
| Ayaz Cumbria Food Ltd | Hospitality | 2025 |
| Aynsome Manor Park Limited | Administrative & support | 1987 |
| B Martin Construction Limited | Manufacturing | 2020 |
| B Mossop Engineering Ltd | Administrative & support | 2015 |
| B.History Services Ltd | Construction | 2024 |
| B.O.B.S Community Garden CIC | Arts & recreation | 2024 |
| Babbling Brook Limited | Professional & scientific | 2007 |
| Back to Blue Ltd | Water & waste | 2022 |
| Baileys Bar and Grill Ltd | Hospitality | 2022 |
| Bainbridge Elecricals Ltd | Construction | 2018 |
| Bakehouse Group Ltd | Hospitality | 2025 |
| Baking Supplies Limited | Wholesale & retail | 2024 |
| Balaaji News Ltd | Wholesale & retail | 2019 |
| Barack Properties Ltd | Hospitality | 2024 |
| Barker Developments (Cumbria) Ltd | Construction | 2010 |
| BARRACABS2025 Ltd | Transport & logistics | 2025 |
| Barrow 1 Shop Ltd | Other services | 2025 |
| Barrow 77 Limited | Hospitality | 2026 |
| Barrow and District Dial-A-Ride | Transport & logistics | 1996 |
| Barrow Apartments Ltd | Hospitality | 2020 |
| Barrow BID Company Limited | Other services | 2016 |
| Barrow Bird and Pet Centre (Cumbria) Limited | Other services | 2022 |
| Barrow Booze Ltd | Wholesale & retail | 2021 |
| Barrow Bridge Club Ltd | Arts & recreation | 2018 |
| Barrow Bullseye Academy Limited | Arts & recreation | 2025 |
| Barrow Bullseye Club Ltd | Wholesale & retail | 2025 |
| Barrow Central Joiners Limited | Administrative & support | 2013 |
| Barrow Community Garage CIC | Wholesale & retail | 2023 |
| Barrow Contractor Digs Limited | Hospitality | 2026 |
| Barrow Curry House Limited | Hospitality | 2026 |
| Barrow Food Bank Limited | Other services | 2013 |
| Barrow Forward Limited | Arts & recreation | 2021 |
| Barrow Fresh Food Limited | Wholesale & retail | 2024 |
| Barrow Futsal Ltd | Arts & recreation | 2024 |
| Barrow Gadget Clinic Limited | Other services | 2025 |
| Barrow in Furness Bargain Store Ltd | Wholesale & retail | 2024 |
| Barrow Indian Cuisine Ltd | Hospitality | 2021 |
| Barrow Island Community Sports Trust Ltd | Arts & recreation | 2017 |
| Barrow Local Limited | Wholesale & retail | 2020 |
| Barrow OFF Shore Services Ltd | Administrative & support | 2013 |
| Barrow on Bikes CIC | Wholesale & retail | 2025 |
| Barrow Real Estate Limited | Real estate | 2025 |
| Barrow Resolve CIC | Health & social care | 2025 |
| Barrow Smile Centre Ltd | Health & social care | 2022 |
| Barrow Sporting Club Limited | Hospitality | 1970 |
| Barrow Super Mart Limited | Wholesale & retail | 2024 |
| Barrow Transport Museum Trust Limited | Arts & recreation | 1997 |
| Barrow Zest Ltd | Hospitality | 2025 |
| Base Events Ltd | Administrative & support | 2025 |
| Bay Towage & Salvage Co. Limited | Transport & logistics | 1980 |
| Bay View Close RTM Company Limited | Households | 2021 |
| BE Creative Design Limited | Information & communication | 2011 |
| Beardy BBQ Ltd | Hospitality | 2023 |
| Beatsure Limited | Other services | 2021 |
| Beautique Walney Ltd | Other services | 2020 |
| Beauty Nest Ltd | Wholesale & retail | 2016 |
| Bedrock Projects Limited | Wholesale & retail | 2025 |
| Bela Management Company Limited | Households | 1981 |
| Belles Choice Limited | Wholesale & retail | 2023 |
| Beluto Properties Ltd | Hospitality | 2014 |
| BEN Stoker Cars Limited | Wholesale & retail | 2023 |
| Benolm Ltd | Wholesale & retail | 2019 |
| Benson Enterprises Limited | Financial services | 2024 |
| Benton Funding Ltd | Financial services | 2018 |
| Berlin Exclusive Guest, Travel & Event Management Services Ltd | Administrative & support | 2014 |
| Bespoke Joinery & Building Services Limited | Construction | 2015 |
| Best Wishes Ltd | Wholesale & retail | 2025 |
| Betimar Ltd | Hospitality | 2025 |
| Better Place Management & Consulting Services Limited | Professional & scientific | 2009 |
| Betterplace Management Services Limited | Professional & scientific | 2014 |
| Beyondasale Ltd | Wholesale & retail | 2025 |
| BIF Engineering Services Limited | Professional & scientific | 2019 |
| Big Blue Properties Ltd | Households | 2019 |
| Big Booty Boutique Ltd | Wholesale & retail | 2023 |