| Company | Timeline | Status | |
| HR Wallingford Limited Director • Director | 12 Feb 2008←8 Years→31 Oct 2016 | Active | |
| Wallingford Systems Limited Director • Director | 12 Feb 2008←8 Years→31 Oct 2016 | Active | |
| The Banjo Kingswear Limited Director • Cd-chief Executive | 13 Jul 2006←19 Years→Current | Active | |
| The Banjo Kingswear Limited Director • Cd-chief Executive | 13 Jul 2006←19 Years→11 Aug 2025 | Active | |
| Aquaware Systems Limited Director • Chartered Civil Engineer | 31 Jul 2000←16 Years→31 Oct 2016 | Active | |
| Wallingford Systems Limited Director • Chartered Civil Engineer | 31 Jul 2000←6 Years→31 Mar 2007 | Active | |
| Wallingford Limited Director • Civil Engineer | 1 Apr 1999←17 Years→31 Oct 2016 | Active | |
| Howbery Park Estates Limited Director • Civil Engineer | 1 Apr 1999←17 Years→31 Oct 2016 | Active | |
| Hydraulics Research Limited Director • Civil Engineer | 1 Apr 1999←17 Years→31 Oct 2016 | Active | |
| HR Mardyn Limited Director • Civil Engineer | 1 Apr 1999←17 Years→31 Oct 2016 | Active | |
