| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| IRISH ASPHALT LIMITED | NF004144 | 01/11/2006 | Dissolved |
| J.T. Minimix Ltd | NI018893 | 24/10/1985 | Dissolved |
| LAGAN CEMENT GROUP LIMITED | NI016511 | 16/03/1983 | Gold |
| LAGAN HOMES LIMITED | NI016805 | 30/06/1983 | Amber |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ANTRIM ASPHALT LIMITED | NI010905 | 24/09/1975 | 06/02/2014 | Amber |
| DADO DEVELOPMENTS POTTINGERS QUAY LTD | NI037446 | 07/02/2001 | 09/01/2004 | Dissolved |
| EAGLEPASS LIMITED | NI020140 | 26/01/1987 | 01/09/2010 | Not Trading |
| KINGSCOURT BRICKS LIMITED | NI018497 | 22/05/1985 | 20/04/2018 | Silver |
| KK DEVELOPMENTS LIMITED | NI037404 | 13/12/2000 | 14/09/2005 | Amber |
| L&B (N0 108) | NI059023 | 30/05/2006 | 01/03/2012 | Dissolved |
| L&B (NO 86) LIMITED | NI053607 | 21/04/2005 | 01/03/2012 | Strike Off |
| LAGAN 106 LIMITED | NI011212 | 10/03/1976 | 01/09/2010 | Amber |
| LAGAN CEMENT LIMITED | NI021378 | 11/03/1988 | 01/03/2012 | Gold |
| LAGAN CONSTRUCTION LIMITED | NI005233 | 31/12/1999 | 01/09/2010 | One Red Flag |
| LAGAN CONSTRUCTION SERVICES LIMITED | NI010673 | 30/04/1975 | 01/09/2010 | Not Trading |
| LAGAN DEVELOPMENTS (HOLDINGS) LIMITED | NI049715 | 27/03/2004 | 29/11/2018 | One Red Flag |
| LAGAN HOLDINGS LIMITED | NI049714 | 24/03/2004 | 11/09/2013 | Amber |
| LAGAN INTERNATIONAL (HOLDINGS) LIMITED | NI054909 | 01/08/2005 | 01/09/2010 | Not Trading |
| LAGAN INTERNATIONAL LIMITED | NI039742 | 29/11/2000 | 01/09/2010 | Silver |
| MONEYCARRAGH LIMITED | NI042079 | 06/12/2001 | 01/03/2012 | Dissolved |
| MULHOLLAND BROS. (BRICK AND SAND) LIMITED | NI009578 | 04/07/1973 | 01/03/2012 | Gold |
| NICHROME LIMITED | NI013087 | 06/10/1978 | 16/07/2004 | Bronze |
| NICHROME LIMITED | NI013087 | 06/10/1978 | 16/07/2004 | Bronze |
| P.J. LAGAN (CONTRACTS) LIMITED | NI007594 | 31/12/1999 | 01/09/2010 | Amber |
| QUAY DEVELOPMENTS LIMITED | NI031285 | 05/11/1999 | 01/03/2012 | Bronze |
| ROADMIX LIMITED | NI013023 | 12/09/1978 | 01/03/2012 | Gold |
| RUSKIN & MCKEATING DEVELOPMENTS LIMITED | NI050380 | 08/07/2004 | 25/11/2013 | Dissolved |
| SPRUCE ENTERPRISES LIMITED | NI044876 | 02/01/2003 | 01/03/2012 | Dissolved |
| UTV LIMITED | NI004230 | 17/04/2003 | 25/06/2009 | Silver |
| WHITEMOUNTAIN QUARRIES LTD | NI018140 | 24/01/1985 | 20/04/2018 | Gold |
| WIRELESS GROUP LIMITED | NI065086 | 13/08/2007 | 23/02/2012 | Bronze |