| Belle&Beyond Limited | Other services | 2024 |
| Bellevue Arms Ltd | Hospitality | 2019 |
| Bellfast Limited | Wholesale & retail | 2025 |
| Belloni Paolo Ltd | Wholesale & retail | 2025 |
| Bells Bakery Suffolk Limited | Hospitality | 2025 |
| Bellsteel Ltd | Wholesale & retail | 2021 |
| Belmont Coffee Shop Limited | Hospitality | 2024 |
| Belmont Eyes Limited | Health & social care | 2019 |
| Belmont Food Group Ltd | Hospitality | 2023 |
| Belmont Lane Limited | Real estate | 2006 |
| Belmont Larder Limited | Hospitality | 2022 |
| Belmont Manor Apartments Limited | Households | 2001 |
| Belmont Mini Market Ltd | Wholesale & retail | 2021 |
| Belmont Park Developments NO.1 (NI) Limited | Real estate | 2007 |
| Belmont Playcare | Education | 2011 |
| Belmont Rentals Ltd | Real estate | 2025 |
| Belmont West Limited | Households | 2013 |
| Belmoor Systems LP | | 2017 |
| Belmore Management Company (NI) Limited | Real estate | 2013 |
| Belmore Place Limited | Real estate | 2011 |
| Belmore Property Developments Ltd | Financial services | 2021 |
| Belnic Investments (NI) Limited | Real estate | 2022 |
| Belore Ventures Limited | Construction | 2025 |
| Below the Radar Ltd | Information & communication | 2006 |
| Belshanny Limited | Administrative & support | 2022 |
| Beltany Mews Management Company Limited | Households | 2024 |
| Beltrae Partners Limited | Financial services | 2003 |
| Beltrae Properties Limited | Real estate | 2026 |
| Belvedere Residential Care Ltd | Health & social care | 2011 |
| Belview Management Company Limited | Real estate | 2014 |
| Belvoir Community Hub | Education | 2017 |
| Belvoir Community Sports Complex | Arts & recreation | 2018 |
| Belvoir Park Management Company Limited | Real estate | 2015 |
| BEN & Tony Properties Ltd | Real estate | 2020 |
| BEN Eden Management Company Limited | Extraterritorial | 1999 |
| BEN Finot Care Services Ltd | Health & social care | 2025 |
| BEN Freel Handyman Services Ltd | Other services | 2026 |
| BEN Johnston Coaching Ltd | Other services | 2025 |
| BEN Madigan Construction Ltd | Construction | 2019 |
| BEN Madigan Electrical Contractors Ltd | Construction | 2007 |
| BEN Madigan Estates Limited | Real estate | 2023 |
| BEN Madigan Heights Management Company Limited | Households | 2025 |
| BEN Madigan Housing Development Ltd | Professional & scientific | 1989 |
| BEN Madigan Management Company Limited | Extraterritorial | 2003 |
| BEN Madigan NO. 2 Management Company Limited | Extraterritorial | 2007 |
| BEN Madigan NO. 3 Management Company Limited | Extraterritorial | 2007 |
| BEN Madigan Properties Ltd | Construction | 2005 |
| BEN Madigan's Bar and Kitchen Ltd | Hospitality | 2019 |
| BEN Peel Ltd | Arts & recreation | 2013 |
| BEN Wyvis Limited | Financial services | 2025 |
| Benart Ltd | Extraterritorial | 2018 |
| Benbane Properties Limited | Financial services | 2021 |
| Benbradagh Limited | Professional & scientific | 2011 |
| Benchmark Building Contractors Limited | Construction | 2003 |
| Benchmark Fitness Belfast Ltd | Arts & recreation | 2021 |
| Bencroy Contracts & Plant Hire Ltd | Construction | 2021 |
| Benedict Casey Ltd | Wholesale & retail | 2025 |
| Beneficial Oils Ltd | Manufacturing | 2013 |
| Benergynutrition Limited | Hospitality | 2020 |
| Bengal Brasserie Ormeau Road Ltd | Hospitality | 2024 |
| Bengal Spice Belfast Limited | Hospitality | 2018 |
| Bengal Spice West Limited | Hospitality | 2025 |
| Benign Limited | Professional & scientific | 2025 |
| Benjamin Phillips Limited | Wholesale & retail | 2024 |
| Benjie Business Ltd | Wholesale & retail | 2023 |
| Benmore (NO 1) Limited | Construction | 2017 |
| Benmore Capital Holdings LLP | | 2014 |
| Benmore Developments (N.I.) Limited | Real estate | 1994 |
| Benmore Group Holdings LLP | | 2014 |
| Benmore Group Limited | Real estate | 2014 |
| Benmore KEC Limited | Construction | 2025 |
| Benmore Properties Limited | Real estate | 1997 |
| Bennett Benifits Ltd | Wholesale & retail | 2024 |
| Bennett Estate Agents Ltd | Real estate | 2015 |
| Bennett Freehill Energy Ltd | Professional & scientific | 2023 |
| Bennett Freehill LLP | | 2020 |
| Benny's Cafe Ltd | Hospitality | 2013 |
| Benraw Properties Ltd | Wholesale & retail | 2025 |
| Benrow Limited | Construction | 2021 |
| Benson Leisure Services Ltd | Arts & recreation | 2025 |
| Bentonz Ltd | Construction | 2024 |
| Bentrim Court Management Company Limited | Households | 2000 |
| Benvore Consulting Limited | Information & communication | 2024 |
| Benzub Limited | Health & social care | 2023 |
| Beravia Seaviation (BSA) Limited | Financial services | 2019 |
| Bercol Limited | Hospitality | 2018 |
| Beresford Management Limited | Professional & scientific | 2014 |
| Bergen Holdings Ltd | Health & social care | 2024 |
| Berkeley Court Residents Association Limited | Other services | 1989 |
| Berlin Arms Ltd | Hospitality | 2020 |
| Berlin Kebap Haus Limited | Hospitality | 2026 |
| Bernadette Mcguinness Ltd | Health & social care | 2022 |
| Bernard Campbell & Co Solicitors Limited | Professional & scientific | 2012 |
| Bernd Hanke Ltd | Wholesale & retail | 2025 |
| Bernie 129 Ltd | Financial services | 2025 |
| Bernier Pharmaceuticals EU Ltd | Wholesale & retail | 2024 |
| Berry Box N.I. Limited | Wholesale & retail | 2023 |
| Bert's Collection Ltd | Real estate | 2023 |
| Bertnet Investments Limited | Financial services | 2021 |
| Bertnet Residential Limited | Financial services | 2021 |