| BOB & Berts Carlisle Limited | Hospitality | 2022 |
| BOB & Berts Coleraine Limited | Hospitality | 2014 |
| BOB & Berts Dundee Limited | Hospitality | 2021 |
| BOB & Berts Flagship Ltd | Hospitality | 2016 |
| BOB & Berts Franchising Limited | Administrative & support | 2014 |
| BOB & Berts Glasgow Limited | Hospitality | 2022 |
| BOB & Berts Group Limited | Hospitality | 2017 |
| BOB & Berts Kendal Limited | Hospitality | 2021 |
| BOB & Berts Lancaster Limited | Hospitality | 2020 |
| BOB & Berts Magherafelt Limited | Hospitality | 2018 |
| BOB & Berts Menarys Limited | Hospitality | 2015 |
| BOB & Berts Perth Limited | Hospitality | 2021 |
| BOB & Berts Portrush Limited | Hospitality | 2014 |
| BOB & Berts Preston Limited | Hospitality | 2021 |
| BOB & Berts Stirling Limited | Hospitality | 2018 |
| BOB & Berts Strabane Limited | Hospitality | 2021 |
| BOB & Berts Wakefield Limited | Hospitality | 2023 |
| BOB & Berts Warrington Limited | Hospitality | 2026 |
| BOB and Berts ANN Street Limited | Hospitality | 2023 |
| BOB and Berts Cookstown Limited | Hospitality | 2019 |
| BOB and Berts Limavady Limited | Hospitality | 2015 |
| BOB and Berts Lisburn Limited | Hospitality | 2015 |
| BOB and Berts Management Limited | Professional & scientific | 2016 |
| BOB and Berts Omagh Limited | Hospitality | 2015 |
| BOB and Berts POP UP Limited | Hospitality | 2017 |
| BOB and Berts Portadown Limited | Hospitality | 2017 |
| BOB and Berts Stranmillis Limited | Hospitality | 2016 |
| Bodcon Fitness Limited | Arts & recreation | 2020 |
| Boucher Developments Limited | Real estate | 2013 |
| Boyd Cars N.I. Limited | Wholesale & retail | 2025 |
| Boyd Commercial Limited | Wholesale & retail | 2013 |
| Bradbury Catering Ltd | Extraterritorial | 2017 |
| Bradleys Filling Station Limited | Wholesale & retail | 2015 |
| Bradys Hunter Limited | Administrative & support | 2005 |
| Brae Trading Ltd | Wholesale & retail | 2022 |
| Braid Carry Management Services Ltd | Households | 2009 |
| Braid Community Association | Health & social care | 2013 |
| Braid Electrical Services Ltd | Construction | 2021 |
| Braid Valley Foods Ltd | Wholesale & retail | 2016 |
| Braid Valley Housing Ltd | Construction | 2024 |
| Braidside Consulting Limited | Professional & scientific | 2025 |
| Braidside Integrated Primary Limited | Education | 1989 |
| Braidview Developments Ltd | Construction | 2006 |
| Brain Support Ltd | Information & communication | 2025 |
| Brentwood Trading (N.I.) Ltd | Hospitality | 2019 |
| Bridge Auto Electrics Limited | Wholesale & retail | 2018 |
| Bridge Farm Ltd | Professional & scientific | 2015 |
| Bridge Legal Services Ltd | Professional & scientific | 2016 |
| Bridge Road Farm 2 Ltd | Real estate | 2018 |
| Bridge Road Farm Limited | Energy | 2012 |
| Bright Ambition Ltd | Wholesale & retail | 2024 |
| Brilliant Trails Ltd | Arts & recreation | 2016 |
| Bristow Dental Laboratory Ltd | Manufacturing | 2025 |
| Broadway Investment Properties Limited | Real estate | 1984 |
| Brocklamont Holdings Ltd | Financial services | 2019 |
| Brocklamont Ltd | Real estate | 2025 |
| Brollyy & Co Ltd | Professional & scientific | 2018 |
| Bronagh Angelina Ltd | Professional & scientific | 2025 |
| Brookeville Enterprises | Administrative & support | 2012 |
| Brookside Construction Ltd | Construction | 2024 |
| Brookvale 1965 Limited | Extraterritorial | 2013 |
| Broughshane & District Community Association Limited | Other services | 1975 |
| Broughshane Playgroup Limited | Education | 2000 |
| Broughshane Properties Ltd | Construction | 2026 |
| Broughshane Street Laundry Ltd | Administrative & support | 2025 |
| BTA Beresford Limited | Transport & logistics | 2026 |
| Bucks Burgers Ltd | Hospitality | 2025 |
| Bucks Outside Catering Limited | Hospitality | 2025 |
| Bulk Buy NI Group Ltd | Wholesale & retail | 2023 |
| Burke Brothers Ltd | Construction | 2021 |
| Bush Fire Ministries Limited | Administrative & support | 2005 |
| Buttercrane Centre Limited | Administrative & support | 1986 |
| Butterstone Properties Limited | Administrative & support | 2018 |
| Buzz Accounting Ireland Ltd | Professional & scientific | 2024 |
| BY Candlelite Ltd | Wholesale & retail | 2022 |
| C & a Smyth Ltd | Agriculture & fishing | 2024 |
| C Doherty & Co Ltd | Professional & scientific | 2004 |
| C Mclarnon & Sons Ltd | Construction | 2020 |
| C P L Building Developments Ltd | Construction | 2003 |
| C&F Tractor and Plant Sales Ltd | Wholesale & retail | 2019 |
| C. a. Snooker Ltd | Arts & recreation | 2025 |
| C.B. Fuels Limited | Wholesale & retail | 2003 |
| C.S.Moments Limited | Arts & recreation | 2015 |
| Cadcam (N.I.) Limited | Manufacturing | 2019 |
| Cairn Delivery Service Limited | Transport & logistics | 1976 |
| Cairnhill Management Co Ltd | Households | 2021 |
| Callender Street Properties (NO.1) Limited | Real estate | 2002 |
| Calwood Catering Ltd | Hospitality | 2026 |
| Camf Properties Ltd | Real estate | 2023 |
| Camlake Developments Ltd | Construction | 2017 |
| Campaigners Youth and Children's Ministry (NI) Trust | Other services | 2007 |
| Campbell Commercials Ltd | Wholesale & retail | 2016 |
| Candela Electrical & Lighting Engineering Ltd | Professional & scientific | 2020 |
| Candy Enterprises (Ballymena) Ltd | Wholesale & retail | 2010 |
| Candykane Ltd | Real estate | 2025 |
| Carbon Mash Ltd | Professional & scientific | 2023 |
| Cardonaghy Property Ltd | Real estate | 2024 |
| Careelma Consultants Limited | Professional & scientific | 2018 |
| Carey Cleaning Machines Ltd | Manufacturing | 2013 |
| Carkerr Limited | Wholesale & retail | 2021 |