| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| CLAYTON DEVELOPMENT LIMITED | 01665973 | 29/06/1991 | Dissolved |
| CLAYTON DEVELOPMENT LIMITED | 01665973 | 29/06/1991 | Dissolved |
| HIGHAM PLACE TRUST | 01801581 | 31/12/1991 | Dissolved |
| NEWCASTLE EDUCATION BUSINESS PARTNERSHIP | 02501985 | 20/06/2002 | Dissolved |
| PURVES LIMITED | 01790875 | 29/06/1991 | Dissolved |
| PURVES LIMITED | 01790875 | 29/06/1991 | Dissolved |
| Power Factors Ltd | 00531002 | 29/06/1991 | Dissolved |
| Purves,Geoffrey,& Partners (Project Management) Ltd | 01831569 | 31/12/1990 | Dissolved |
| SAUNDERS AND PURVES LIMITED | 00462678 | 29/06/1991 | Bronze |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ARCHITECTS BENEVOLENT SOCIETY | 01084747 | 08/03/2000 | 15/06/2022 | Bronze |
| COMMUNITY RENEWABLE ENERGY LIMITED | 06055299 | 17/05/2010 | 09/01/2012 | Dissolved |
| HIGH FLYERS AVIATION LIMITED | 04009112 | 06/10/2000 | 15/03/2003 | Dissolved |
| HIGH FLYERS AVIATION LIMITED | 04009112 | 06/10/2000 | 15/03/2003 | Dissolved |
| NBS ENTERPRISES LIMITED | 00978271 | 17/07/1996 | 17/07/2002 | Gold |
| NORTHUMBERLAND AND NEWCASTLE SOCIETY | 05528804 | 02/06/2007 | 21/05/2019 | Gold |
| PURVES ASH MANAGEMENT SERVICES LIMITED | 05054648 | 24/02/2004 | 29/07/2010 | Dissolved |
| R I B A Publications Ltd | 00951166 | 10/07/1992 | 25/01/1993 | Dissolved |
| TEMPLE BAR TRUST | 11584511 | 20/05/2019 | 08/11/2024 | Silver |
| THE NORTHERN ARCHITECTURE CENTRE | 03056241 | 15/05/1995 | 08/01/1998 | Dissolved |