| Scheme No | Company |
| NI 1696/13 | A & M Haughian Ltd |
| NI 1743/14 | A McKee & Co Limited |
| NI 2008/18 | Abax Electrical Limited |
| NI 1723/13 | Abbey Medicare (NI) Ltd |
| NI 1590/13 | Abraham Tree Maintenance |
| NI 1553/12 | Access Scaffolding Co (NI) Ltd |
| NI 0732/05 | Adair Building Services Ltd |
| NI 1721/13 | Advanced NI Scaffolding Ltd |
| NI 2050/22 | AF Mechanical limited |
| NI 2070/23 | AIC Group Limited |
| NI 0456/04 | Alexander Bonar & Co Ltd |
| NI 1224/09 | Alskea Limited |
| NI 0570/04 | Amalgamated Environmental Services (AES) Ltd t/a AES Marconi |
| NI 0839/06 | Ampion Limited |
| NI 1857/15 | Anamore |
| NI 1444/11 | Anderson Haulage Limited |
| NI 0510/04 | Andrew Bradley Limited |
| NI 0466/04 | Annett Landscaping Limited |
| NI 0586/04 | Annvale Construction Ltd |
| NI 0262/04 | Antrim Electrical & Mechanical Engineers Limited |
| NI 2037/21 | Ard Contracts Limited |
| NI 2053/22 | ARG Limited |
| NI 0769/06 | Ashleigh (NI) Ltd |
| NI 1930/17 | Atmac Construction Limited |
| NI 1142/08 | Aughrim Building Company Ltd |