| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Pm 2000 Ltd | 02855176 | 12/10/1993 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| APMG-AUSTRALASIA LIMITED | 06338597 | 09/08/2007 | 31/03/2010 | Silver |
| APMG-ICP LIMITED | 05530368 | 08/08/2005 | 31/03/2010 | Dissolved |
| APMG-UK LIMITED | 06274579 | 11/06/2007 | 31/03/2010 | Silver |
| ASSOCIATION FOR PROJECT MANAGEMENT | 01218334 | 16/09/1992 | 29/06/1998 | Dissolved |
| ASSOCIATION FOR PROJECT MANAGEMENT | 01218334 | 16/06/1993 | 29/06/1998 | Dissolved |
| ATKINS PLANNING & MANAGEMENT CONSULTANTS LIMITED | 00819139 | 20/09/1992 | 31/10/1992 | Dissolved |
| ATKINSRÉALIS CONSULTANTS LIMITED | 00755613 | 24/09/1991 | 31/10/1992 | Dissolved |
| INTERCERT UK LIMITED | 04055867 | 22/05/2002 | 31/03/2010 | Silver |
| LHA LONDON LTD | 00363816 | 11/04/2000 | 31/12/2015 | Gold |
| LHA SERVICES LIMITED | 03424128 | 07/12/2010 | 31/12/2015 | Silver |
| PPMBESTPRACTICE LTD | 04754138 | 06/05/2003 | 31/03/2010 | Dissolved |
| PPMGOODPRACTICE LTD | 04754130 | 06/05/2003 | 31/03/2010 | Dissolved |
| THE APM GROUP LIMITED | 02861902 | 13/10/1993 | 31/03/2010 | Gold |
| THE PROJECT SHOP LIMITED | 02855166 | 12/10/1993 | 31/03/2010 | Silver |
| Ws Atkins Rail Ltd | 00545570 | 20/09/1992 | 31/10/1992 | Dissolved |