| AG (Acheson + Glover) | ag.uk.com | |
| Adcrete Ltd | adcrete.co.uk | Affiliate - More details |
| Armagh City Quarries | | |
| B McCaffrey & Sons Ltd | mccaffreyquarries.com | |
| Barrick Hill Quarries | barrackhillquarries.com | |
| Breedon Group | breedongroup.com | |
| Campbell Contracts Ltd | campbellcontracts.com | |
| Carson McDowell LLP | carson-mcdowell.com | Affiliate - More details |
| CavanaghKelly | cavanaghkelly.com | Affiliate - More details |
| CDE | cdeglobal.com | Affiliate - More details |
| Cleaver Fulton Rankin | cleaverfultonrankin.co.uk | Affiliate - More details |
| Colas (Associate) | colas.ie | |
| Colinwell Concrete Ltd | colinwellconcrete.com | |
| Collen Brothers (Quarries) Ltd | collenbros.co.uk | |
| Conexpo (NI) Ltd | conexpo.co.uk | |
| ConveyorTek | conveyortek.com | Affiliate - More details |
| Core Aggregates | coreaggregates.com | |
| Creagh Concrete Products Ltd | creaghconcrete.co.uk | |
| Curtis Enterprises | curtis-enterprises.com | |
| Dalradian Gold Ltd | dalradian.com | |
| Dennison Commercials Ltd | dennisons.co.uk | Affiliate - More details |
| Douglas Acheson | | |
| Ecocem Ireland Ltd | ecocem.ie | |
| Finning | finning.com | Affiliate - More details |
| F P McCann Ltd | fpmccann.co.uk | |
| Gibson Bros Ltd | gibsonbros.co.uk | |
| Harold Graham | | |
| Hughes Precast Products Ltd | hughesprecast.co.uk | |
| Industry Training Services Ltd | industrytrainingservices.com | Affiliate - More details |
| Irish Salt Mining and Exploration Co Ltd | irishsaltmining.com | |
| Irwins Quality Aggregates Ltd | irwin-aggregates.com | |
| James Boyd & Sons (Carnmoney) Ltd | boydsquarries.co.uk | |
| Jordan Concrete Ltd | jordanconcrete.co.uk | |
| Kemek Ltd | kemekltd.com | Affiliate |
| Kilwaughter Minerals Ltd | kilwaughter.com | |
| Lafarge Ireland Ltd | lafarge.com | |
| Larsen Building Products | larsenbuildingproducts.com | Affiliate |
| Loughran Rock Industries | | |
| Macrete Ireland | macrete.com | |
| MANNOK | mannokbuild.com | |
| Matthew Robinson & Son Concrete Products | robinsonconcrete.co.uk | |
| McGarrity Bros Ltd | mcgarritybrosconcrete.co.uk | |
| McQuillan Companies | mcquillancompanies.com | |
| MCL Consulting | mclni.com | Affiliate - More details |
| Momentum R & D | momentumgroupni.com | Affiliate - More details |
| Moore Concrete Products Ltd | moore-concrete.com | |
| MW Johnston | mwjohnston.co.uk | |
| Norman Emerson Group Ltd | normanemerson.com | |
| Northstone (NI) Ltd | northstone-ni.com | |
| OMYA | omya.com | |
| Orica Blast & Quarry Surveys Ltd | blastquarry.com | Affiliate - More details |
| PCP Group | pcpgroup.co.uk | Affiliate - More details |
| P Keenan | pkeenanroads.com | |
| Peter Fitzpatrick Ltd | pfitzpatrick.com | |
| Premier Cement Ltd | premiercement.co.uk | |
| Quarryplan | quarryplan.com | Affiliate - More details |
| Rapid International Ltd | rapidinternational.com | Affiliate - More details |
| ReCon Waste Management Ltd | reconwastemanagement.com | Affiliate - More details |
| RHM Commercial | rhmcommercial.com | Affiliate - More details |
| Riddles Bros Ltd | | |
| R J Mitten & Sons | | |
| Robinson Quarry Masters | robinsonquarry.co.uk | |
| RSK Ireland Ltd | rskgroup.com | Affiliate - More details |
| RTU Ltd | rtu.co.uk | |
| Simplicity Group | simplicity.group | Affiliate - More details |
| Six-West | six-west.com | Affiliate - More details |
| SLR Consulting Ltd | slrconsulting.com | Affiliate - More details |
| Stanley Bell Sand & Gravel | stanleybellandsons.com | |
| TBF Thompson Group | tbfthompson.com | Affiliate - More details |
| Tennants Bitumen (Associate) | tennantsdistribution.com | |
| T H Moore (Contracts) Ltd | | |
| Tobermore Concrete Products Ltd | tobermore.co.uk | |
| Tracey Concrete Ltd | traceyconcrete.com | |
| Tullyraine Quarries Ltd | tullyrainequarries.co.uk | |
| Turley | turley.co.uk | Affiliate - More details |
| W & J Chambers Ltd | wjchambers.com | |
| Whitemountain | whitemountain.breedongroup.com | |
| William Orbinson KC | williamorbinson.co.uk | Affiliate - More details |
