| Company | Timeline | Status | |
| Hyder Consulting Overseas Holdings Limited Director • Director | 8 Apr 2003←2 Years 7 Months→25 Nov 2005 | Active | |
| Acer Partnerships Limited Director • Sales Director | 29 Dec 2000←4 Years→25 Nov 2005 | Dissolved | |
| Acer Sir Bruce White Limited Director • Sales Director | 29 Dec 2000←4 Years→25 Nov 2005 | Dissolved | |
| Hyder 1 Limited Director • Sales Director | 29 Dec 2000←4 Years→25 Nov 2005 | Dissolved | |
| Arcadis Consulting Europe Limited Director • Sales Director | 29 Dec 2000←4 Years→25 Nov 2005 | Active | |
| Arcadis Consulting (UK) Limited Director • Sales Director | 29 Dec 2000←4 Years→25 Nov 2005 | Active | |
| Arcadis Consulting Group Limited Director • Sales Director | 29 Dec 2000←4 Years→25 Nov 2005 | Active | |
| Acer John Taylor Limited Director • Sales Director | 29 Dec 2000←4 Years→25 Nov 2005 | Dissolved | |
| Arcadis Consulting Holdings Limited Director • Sales And Marketing Director | 28 Nov 2000←4 Years→25 Nov 2005 | Active | |
| Keldown Flat Management Limited Director • Retired Oilfield Manager | 5 May 1998←15 Years→10 Apr 2014 | Active | |
