| Mskinject Healthcare Ltd | Health & social care | 2023 |
| N Mcsherry & Co Ltd | Wholesale & retail | 2025 |
| Nalchem Ltd | Professional & scientific | 2014 |
| Neil Anderson Residential Ltd | Real estate | 2026 |
| Neotech-Agri Ltd | Agriculture & fishing | 2014 |
| New Creation Distributors Limited | Wholesale & retail | 2013 |
| New Found Joy Limited | Manufacturing | 2013 |
| New Wine Ireland | Other services | 2005 |
| Nigel Magee Electrical Ltd | Construction | 2026 |
| NIU Racing Ltd | Arts & recreation | 1993 |
| Norkam Ltd | Manufacturing | 2024 |
| Norlas Film Ltd | Arts & recreation | 2013 |
| Northwest Hand, Wrist and Elbow Surgery Ltd | Health & social care | 2018 |
| NT Contracts (N.I.) Limited | Information & communication | 2011 |
| NTK Central Properties Ltd | Real estate | 1991 |
| NTK Leisure Limited | Arts & recreation | 1998 |
| Nunchuck Productions Ltd | Arts & recreation | 2023 |
| Oakvale Trading Ltd | Real estate | 2008 |
| Optacc Ltd | Financial services | 2019 |
| Orchard County Groundworks Ltd | Construction | 2016 |
| Outlet Recording Company Limited - the | Information & communication | 1966 |
| Oversize Tyre Recycling Ltd | Water & waste | 2022 |
| P & G Magowan Ltd | Construction | 2011 |
| P & L Hanna Ltd | Wholesale & retail | 2011 |
| P.J. Hughes Limited | | 1996 |
| PCS Investments Ltd | Real estate | 2000 |
| Pendulum Physio Ltd | Health & social care | 2022 |
| Performance Automotive NI Ltd | Wholesale & retail | 2016 |
| Peter Murphy Solicitors Ltd | Professional & scientific | 2013 |
| Philip N.Shaffrey and Partners | | 1984 |
| Pink Time Ltd. | Manufacturing | 2002 |
| PJS Financial Consultancy Ltd | Financial services | 2016 |
| PKO Leisure Limited | Hospitality | 1998 |
| Plastic Promotions Limited | Manufacturing | 1988 |
| Platform Scaffolding Services Ltd | Construction | 2022 |
| Portlee Limited | Real estate | 2014 |
| Portmore Farms, Limited, | Agriculture & fishing | 1936 |
| Poszka Ltd | Transport & logistics | 2022 |
| Power Boat Association Northern Ireland | Other services | 2019 |
| Pretty Flamingo Ltd | Wholesale & retail | 2011 |
| Prime Burrito Limited | Hospitality | 2024 |
| R & C Bricklayers Ltd | Construction | 2026 |
| R&M Decorating Services Limited | Construction | 2003 |
| Radius Plastics Limited | Manufacturing | 1979 |
| Rayan 008 Ltd | Real estate | 2025 |
| RDE Electrical Ltd | Construction | 2018 |
| Reality Digital Marketing Ltd | Professional & scientific | 2020 |
| Rebecca 2016 Ltd | Transport & logistics | 2018 |
| Redline Specialist Contractors Ltd | Construction | 2024 |
| Repatriation UK Ltd | Other services | 2025 |
| Reynolds Precision Engineering Ltd | Manufacturing | 2024 |
| RH Signs Ltd | Other services | 2016 |
| Rice's Fish & Chips Limited | Hospitality | 2024 |
| RKL Electrical Ltd | Other services | 2022 |
| Ronnie Russell Ltd | Other services | 2019 |
| Rowan Park Lurgan Management Ltd | Households | 2022 |
| Roxboro Lighting Limited | Wholesale & retail | 1998 |
| SAM Catering 2026 Ltd | Hospitality | 2026 |
| Samuel Lamont & Sons Limited | Manufacturing | 1924 |
| Samuel Lamont (Holdings) Limited | Manufacturing | 1958 |
| Sands Marine & Leisure Ltd | Wholesale & retail | 2008 |
| Secure Lock and Safe Limited | Other services | 2025 |
| Seilebost Ltd | Financial services | 2021 |
| Shalom Life | Other services | 2017 |
| Shooters Amusement Centre Ltd | Arts & recreation | 2011 |
| Silverwood Estate Properties Ltd | Real estate | 2022 |
| Skelton Travel Services Ltd | Administrative & support | 2014 |
| SL Refrigeration Ltd | Other services | 2007 |
| SMC Lawns Limited | Administrative & support | 2024 |
| Smugglers Lurgan Limited | Hospitality | 2011 |
| Smyth,Mcgeown and Company Limited | Wholesale & retail | 1973 |
| Sonoco Limited | | 1969 |
| Southpaw Fitness Ltd | Education | 2021 |
| Southshore Marine & Diesel Ltd | Wholesale & retail | 2013 |
| Spark Reaction Ltd | Education | 2025 |
| Specialist Maintenance Products Limited | Extraterritorial | 2007 |
| Stafford Mcguigan Properties Ltd | Extraterritorial | 1999 |
| Stephen Mckay Opticians Limited | Health & social care | 2023 |
| Stockridge Limited | Extraterritorial | 2003 |
| STUFF2WEAR.COM Ltd | Wholesale & retail | 2013 |
| Swift Solicitors Limited | Professional & scientific | 2015 |
| T.G. Menary Solicitors Limited | Professional & scientific | 2012 |
| T.J.I.D.D. Limited | Real estate | 1994 |
| Taboo Group Ltd | Manufacturing | 2022 |
| Task Connect Limited | Administrative & support | 2023 |
| Taxee UK Ltd | Information & communication | 2025 |
| Telman Holdings Limited | Real estate | 2025 |
| Tglg Property Services Limited | Real estate | 2007 |
| THE Canterbury Arms Ltd | Hospitality | 2026 |
| THE Hive Venue Ltd | Arts & recreation | 2023 |
| THE Meadows Equestrian Centre & Stud Ltd | Arts & recreation | 2007 |
| THE Mission Control Communications Ltd | Professional & scientific | 2014 |
| THE Pavers Cave Ltd | Construction | 2023 |
| THE Recovery Garden NI Ltd | Arts & recreation | 2024 |
| Thomas Mcconaghy and Sons Limited | Hospitality | 1975 |
| Tile Magik (NI) Ltd | Wholesale & retail | 2013 |
| Titanic Telecoms Limited | Information & communication | 2021 |
| TOM Magee Ltd | Real estate | 2002 |
| Trace Intercept Topco Limited | Information & communication | 2024 |
| Trade Solutions (Ireland) Ltd | Wholesale & retail | 2023 |