| Company | Timeline | Status | |
| GPS Salisbury Limited Secretary • Unreported | 5 Feb 2007←15 Years→1 Jul 2022 | Active | |
| Gladstone Property Services Limited Secretary • Unreported | 20 Aug 2004←17 Years→8 Mar 2022 | Active | |
| Gladstone Homes Developments Limited Secretary • Unreported | 13 May 2003←17 Years→20 Apr 2021 | Dissolved | |
Gladstone Construction Limited Secretary • Unreported | 12 May 2003←11 Years→13 Jan 2015 | Dissolved | |
| Gladstone Homes Limited Secretary • Company Secretary | 1 Mar 1995←26 Years→16 Mar 2021 | Dissolved | |
