| Company | Timeline | Status | |
| Oxalis Planning Limited Director • Town Planner | 24 Aug 2010←15 Years→Current | Active | |
| Holmes Antill Planning Design And Development Limited Secretary • Town Planning | 5 Jan 2004←21 Years→Current | Active | |
| Cicero Planning Design And Development Limited Secretary • Town Planning | 5 Jan 2004←6 Years→17 Jun 2010 | Active | |
| Deancoast Limited Director • Planner And Consultant | 28 Nov 2003←1 Year 9 Months→1 Sep 2005 | Dissolved | |
| Holmes Antill Planning Design And Development Limited Director • Chartered Town Planner | 22 Feb 1994←31 Years→Current | Active | |
| Featherstone Planning Design And Development Limited Director • Company Director | 17 Nov 1993←31 Years→Current | Active | |
| David Wilson Estates Limited Director • Chartered Town Planner | 24 May 1992←8 Months→31 Jan 1993 | Active | |
| Trencherwood Developments Limited Director • Chartered Town Planner | 24 May 1992←8 Months→31 Jan 1993 | Active | |
| David Wilson Homes Limited Director • Chartered Town Planner | 24 May 1992←8 Months→31 Jan 1993 | Active | |
| Wilson Bowden Developments Limited Director • Chartered Town Planner | 1 Oct 1991←1 Year 4 Months→31 Jan 1993 | Active | |
