| Urologik UK Limited | Financial services | 2023 |
| V2 Brothers Ltd | Hospitality | 2019 |
| VAG Service Centre Ltd | Wholesale & retail | 2023 |
| Van Hayre Ltd | Administrative & support | 2025 |
| Vanquish Automotive Limited | Wholesale & retail | 2026 |
| Variety Hall Limited | Wholesale & retail | 2025 |
| Varyus Apparel Ltd | Wholesale & retail | 2025 |
| Vaughan Engineering Group Limited | Financial services | 1972 |
| Vaughan Engineering Services Limited | Professional & scientific | 1955 |
| VD Brothers Limited | Hospitality | 2022 |
| Vdaisy Limited | Other services | 2024 |
| Vendit Limited | | 2001 |
| Venuebooker Solutions Ltd | Information & communication | 2026 |
| VG Management Ltd | Professional & scientific | 2021 |
| VH (Ballyearl) Ltd | Construction | 2021 |
| Vialio Consulting Limited | Health & social care | 2024 |
| Vibella Health and Fitness Ltd | Other services | 2025 |
| Vindex Specialist Protective Solutions Ltd | Professional & scientific | 2026 |
| Visionboard Advertising Ltd | Professional & scientific | 2025 |
| Voltech Engineering Limited | Energy | 2024 |
| Vyta Secure Group Holdings Ltd | Financial services | 2014 |
| Vyta Secure Ltd | Information & communication | 2001 |
| W Hall (Properties) Limited | Real estate | 2000 |
| W Mcmurdie Ltd | Real estate | 2024 |
| W&M Air Ltd | Energy | 2024 |
| W. Hall Limited | Manufacturing | 1977 |
| W.C Fire Ltd | Public administration | 2025 |
| W.J. Compton Limited | Wholesale & retail | 1976 |
| W.M & D Mcalister Limited | Health & social care | 2013 |
| W.S. Agencies Limited | Wholesale & retail | 2006 |
| W4 Contracts Ltd | Real estate | 2020 |
| Waka FU Limited | Hospitality | 2025 |
| Walkers Newtownabbey Ltd | Wholesale & retail | 2019 |
| Wallmac Property Ltd | Real estate | 2024 |
| Walnut Hollow Management Company Limited | Real estate | 2003 |
| Ward Brands Limited | Wholesale & retail | 2021 |
| Ward Consultancy Ltd | Financial services | 2016 |
| Wavve Technologies Limited | Manufacturing | 2023 |
| WE ARE Canopy Ltd | Information & communication | 1995 |
| Web Force Group NI Limited | Professional & scientific | 2017 |
| Weir Services Ltd | Households | 2026 |
| WELL4U Ltd | Manufacturing | 2025 |
| Werudo Incorporated Ltd | Health & social care | 2022 |
| Westland Drive Management Company Limited | Real estate | 2016 |
| Westport Cyber Limited | Information & communication | 2026 |
| Whan Developments Ltd | Construction | 2007 |
| Whan Holdings Ltd | Real estate | 2023 |
| What Lauren Eats Ltd | Hospitality | 2022 |
| White Label Experiences Ltd | Administrative & support | 2023 |
| Whitehead Private Nursing Home Limited | Health & social care | 1986 |
| Whitehouse Engineering Company Limited | Manufacturing | 1970 |
| Whitemountain Quarries Ltd | Mining & quarrying | 1985 |
| Whittaker and Watt Architects Ltd | Professional & scientific | 2012 |
| Wholesome Words Limited | Other services | 2025 |
| Whose Art Cafe Ltd | Hospitality | 2025 |
| Whyte Cable Co Ltd | Information & communication | 2024 |
| William Burns Consulting Ltd | Information & communication | 2020 |
| Willow BEA Limited | Financial services | 2019 |
| Willow BEA Properties Ltd | Real estate | 2022 |
| Wilson Property (N.I.) Ltd | Real estate | 2023 |
| Wilsons Auctions Crypto Limited | Professional & scientific | 2018 |
| Wilsons Auctions Limited | Wholesale & retail | 1977 |
| Wilzac Ltd | Other services | 2025 |
| Windowmate (East Belfast) Limited | Construction | 2013 |
| Windowmate (Fermanagh) Limited | Manufacturing | 2004 |
| Windowmate (NI) Limited | Wholesale & retail | 2011 |
| Windows 2000 Belfast Limited | Construction | 2010 |
| Wineway (N.I.) Ltd | Hospitality | 2018 |
| Winnington & Co. Ltd | Information & communication | 2021 |
| Wiredd Ltd | Construction | 2016 |
| Wklc Commerce Ltd | Wholesale & retail | 2024 |
| Woodland Avenue Apartment Management Company Limited | Households | 2023 |
| WTB Beauty Limited | Wholesale & retail | 2019 |
| Wylie Livestock Ltd | Agriculture & fishing | 2022 |
| Yeluma Ltd | Wholesale & retail | 2025 |
| Yogamom Ltd | Health & social care | 2026 |
| Youthworks (N.I.) Ltd | Education | 2013 |
| Yuppla Group Ltd | Wholesale & retail | 2020 |
| Z M & E Ltd | Construction | 2023 |
| Z Property Group (Kilmacolm) Ltd | Construction | 2023 |
| Z Property Group (Norton) Ltd | Construction | 2023 |
| Zamani Solutions Limited | Professional & scientific | 2024 |
| Zebe Marketplace Ltd | Wholesale & retail | 2023 |
| Zeetopia Limited | Information & communication | 2017 |
| Zero Pest Control Ltd | Administrative & support | 2026 |
| ZKJ Limited | Arts & recreation | 2009 |
| ZOE Life Care Ltd | Administrative & support | 2024 |
| Zygre Mobile Limited | Wholesale & retail | 2025 |