| A & H Nicholson Ltd | Construction | 2005 |
| A & R Donaldson Ltd | Construction | 2022 |
| A. B. Potatoes Ltd | Agriculture & fishing | 2013 |
| Adam Annett and SON Limited | Real estate | 2022 |
| Alphabetamini Ltd | Manufacturing | 2019 |
| Amon Electronics (N.I.) Limited | Wholesale & retail | 2018 |
| Anachem Hygiene (Ireland) Limited | Other services | 1995 |
| Andrew Campbell (NI) Ltd | Agriculture & fishing | 2014 |
| Anum Cara Holdings Limited | Financial services | 2025 |
| Ashbrook Facility Management Limited | Administrative & support | 2016 |
| Automar NI Limited | Professional & scientific | 2015 |
| AW Vape Limited | Wholesale & retail | 2019 |
| B&A Mcbride Property Ltd | Households | 2022 |
| Bathampton Ltd | Administrative & support | 2021 |
| Bedwin Soft Furnishing Limited | Manufacturing | 2015 |
| Beer HUT Brewing Company Ltd | Manufacturing | 2017 |
| Belyre Ltd | Transport & logistics | 2019 |
| Blackford Construction Ltd | Construction | 2020 |
| Blastwing Ltd | Transport & logistics | 2019 |
| Camphill Community Mourne Grange | Health & social care | 1972 |
| Campusstreet Ltd | Transport & logistics | 2019 |
| Candlebloom Ltd | Transport & logistics | 2019 |
| Carndale Ltd | Real estate | 2022 |
| Celtic Street Co. Ltd | Wholesale & retail | 2025 |
| CH Marine (NI) Limited | Wholesale & retail | 2002 |
| Chambersmcbride Limited | Hospitality | 2024 |
| Chognyrus Ltd | Transport & logistics | 2019 |
| College Green (Kilkeel) Management Limited | Households | 2024 |
| Colwyn Bay Ltd | Transport & logistics | 2021 |
| Conrad Joinery Ltd | Construction | 2025 |
| Coombe Keynes Ltd | Administrative & support | 2022 |
| Cufinn Trading Ltd | Wholesale & retail | 2019 |
| D & J Assets Limited | Real estate | 2025 |
| D&M Herron Ltd | Hospitality | 2021 |
| David Ford Bespoke Flooring Ltd | Construction | 2024 |
| Davin Windows Limited | Construction | 2018 |
| Dent Artist Ltd | Wholesale & retail | 2015 |
| Deptford Transport Ltd | Administrative & support | 2022 |
| Donaldson & Mills Ltd. | Health & social care | 2010 |
| Drawhiarcut Ltd | Administrative & support | 2019 |
| Drawphoenix Ltd | Administrative & support | 2019 |
| Eclectic Design Limited | Manufacturing | 2014 |
| Ecovestors Ltd | Administrative & support | 2019 |
| Eggsbacon Ltd | Administrative & support | 2019 |
| Enviroculturaldesigns Ltd | Transport & logistics | 2019 |
| Etec Services (UK) Ltd | Water & waste | 2002 |
| Eventing Ireland (Northern Region) Limited | Arts & recreation | 1986 |
| Firmdiscipline Ltd | Transport & logistics | 2019 |
| Frozen at Sea Prawns Ltd | Agriculture & fishing | 2024 |
| G & S Forsythe Limited | Hospitality | 2012 |
| G Mckee Contractors Ltd | Construction | 2020 |
| Glen Arctic (NI) Limited | Agriculture & fishing | 2019 |
| Glenravel Limited | Agriculture & fishing | 2015 |
| Golden Seaside 2024 Ltd | Hospitality | 2024 |
| Gortacarn Ltd | Transport & logistics | 2021 |
| Gortdonaghy Ltd | Transport & logistics | 2021 |
| Graysmark & Cunningham Ltd | Construction | 2012 |
| Greenland Homes NI Ltd | Construction | 2004 |
| Gridunwa Ltd | Transport & logistics | 2019 |
| GTS Contracts Ltd | Construction | 2012 |
| Haugh Dental Care Limited | Health & social care | 2023 |
| Haulbowline Ltd | Administrative & support | 2018 |
| Herrons Country Fried Chicken (Franchising) Ltd | Hospitality | 2013 |
| Herrons Country Fried Chicken (Kilkeel) Ltd | Hospitality | 2014 |
| Heslip Fishing Ltd | Agriculture & fishing | 2015 |
| Hypnotize Ltd | Transport & logistics | 2019 |
| Icelipzith Ltd | Transport & logistics | 2023 |
| Impact Engineering NI Limited | Professional & scientific | 2025 |
| Ivernia Constructions and Development Ltd | Construction | 2025 |
| James Alexander Engineering Ltd. | Construction | 2010 |
| Jeta Innovations Ltd | Extraterritorial | 2023 |
| John a Shannon Ltd. | Wholesale & retail | 2010 |
| Jordan Mullan Electrical Ltd | Construction | 2023 |
| JTN Contracts Ltd | Construction | 2015 |
| Kelly Consultants Ltd | Professional & scientific | 2003 |
| KG Building Contracts Ltd | Construction | 2021 |
| Kilkeel Charitable Trust | Other services | 2009 |
| Kilkeel Development Association Limited | Other services | 1992 |
| Kilkeel Mechanical Ltd | Construction | 2024 |
| Kilkeel Physio and Pilates Clinic LLP | | 2025 |
| Kingdom Youth Club | Arts & recreation | 2012 |
| Kusetus Ltd | Transport & logistics | 2019 |
| Kuzoteus Ltd | Transport & logistics | 2019 |
| L Burns Fish Limited | Agriculture & fishing | 2012 |
| Leaflite Ltd | Transport & logistics | 2019 |
| LEE Hanna Bricklaying Ltd | Construction | 2006 |
| Lenger Seafoods Ireland Ltd | Agriculture & fishing | 2007 |
| Littertech UK Ltd | Manufacturing | 2018 |
| Lonetreasure Ltd | Administrative & support | 2019 |
| Lonsdale Limited | Extraterritorial | 2024 |
| LSS Logistics Ltd | Transport & logistics | 2015 |
| Luchaltro Ltd | Transport & logistics | 2019 |
| Luckyblitz Ltd | Transport & logistics | 2019 |
| Luckychase Ltd | Transport & logistics | 2019 |
| Lueaco Ltd | Transport & logistics | 2019 |
| Lunda Ltd | Transport & logistics | 2022 |
| Malaca Ltd | Wholesale & retail | 2022 |
| Massivenest Ltd | Administrative & support | 2019 |
| Mcbride Marine Services Ltd | Agriculture & fishing | 2022 |
| Memoryshark Ltd | Administrative & support | 2019 |