| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Ashmore Enterprises Ltd | 01981774 | 31/12/1990 | Dissolved |
| BYRNEKELTBRAY J.V LTD | 06927120 | 08/06/2009 | Dissolved |
| Byrne Bros Design & Build Ltd | 02605146 | 31/12/1992 | Dissolved |
| Byrne Bros Plant Hire Ltd | 02528246 | 06/08/1991 | Dissolved |
| Byrne Bros Structures Ltd | 02528026 | 06/08/1991 | Dissolved |
| CONSULT BG LIMITED | 08108368 | 18/06/2012 | Dissolved |
| Drayburn Builders Merchants Ltd | 01584969 | 31/12/1991 | Dissolved |
| Ellmer,F B,Design & Build Ltd | 02605099 | 25/04/1992 | Dissolved |
| Gibtons Limited | 02397145 | 31/12/1991 | Dissolved |
| JUNGLE 15 LIMITED | 02894149 | 15/05/1997 | Dissolved |
| Jungle 16 Ltd. | 02894146 | 15/05/1997 | Dissolved |
| Jungle 17 Ltd | 03065072 | 15/05/1997 | Dissolved |
| Lister (Civil Engineering) Limited | 00972063 | 31/12/1990 | Dissolved |
| New Wharf (Formwork) Ltd | 01812661 | 31/12/1990 | Dissolved |
| Sunjoy Limited | 01585564 | 31/12/1990 | Dissolved |
| Troughs & Moulds (Northern) Ltd | 02203489 | 31/12/1990 | Dissolved |
| Troughs & Moulds Ltd | 01161016 | 31/12/1990 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| BRADFIELD PROPERTIES LIMITED | 04084835 | 10/10/2000 | 22/02/2001 | Gold |
| BYRNE BROS. (FORMWORK) LIMITED | 01179102 | 31/12/1991 | 19/06/2018 | Amber |
| BYRNE GROUP LIMITED | 01100323 | 31/12/1990 | 19/06/2018 | Gold |
| BYRNE GROUP PROJECTS LTD | 09158027 | 01/01/2015 | 19/06/2018 | Dissolved |
| BYRNE GROUP RESIDENTIAL LIMITED | 03423607 | 22/08/1997 | 22/08/2024 | Bronze |
| CHORUS GROUP HOLDINGS LIMITED | 03925528 | 08/03/2011 | 19/06/2018 | Silver |
| CHORUS GROUP LIMITED | 03164346 | 08/03/2011 | 19/06/2018 | Silver |
| F.B.ELLMER LIMITED | 00260559 | 31/12/1990 | 19/06/2018 | Bronze |
| INTEGRATED BUILDING PRODUCTS LIMITED | 07472105 | 16/12/2010 | 19/06/2018 | Dissolved |
| O'KEEFE DEMOLITION (BYRNE GROUP) LIMITED | 09065194 | 02/06/2014 | 19/06/2018 | Bronze |
| THORN PLANT HIRE LIMITED | 02214285 | 31/12/1990 | 29/02/2016 | Silver |