| Company | Timeline | Status | |
| David Watson Consultancy Services Limited Director • Unreported | 17 Jan 2018←7 Years→Current | Active | |
| SGS Cambridge Limited Director • Company Director | 23 Nov 2016←1 Year 1 Month→20 Jan 2018 | Active | |
| Chemtest Holdings Limited Director • Company Director | 4 Feb 2015←12 Months→31 Jan 2016 | Dissolved | |
| Mill Mews Residential Management Company Limited Director • Company Director | 18 Jul 2014←1 Year 9 Months→6 May 2016 | Active | |
| Eurofins Chemtest Limited Director • Company Director | 12 Nov 2012←3 Years→31 Jan 2016 | Active | |
| Socotec UK Limited Director • None | 1 May 2010←2 Years→11 May 2012 | Active | |
| Scientifics Limited Director • Chartered Chemist | 14 Feb 2006←6 Years→11 May 2012 | Active | |
Atesta Trustees Limited Director • Chartered Chemist | 7 Dec 2005←4 Years→1 May 2010 | Dissolved | |
Atesta Holdings Limited Director • Chartered Chemist | 7 Dec 2005←4 Years→1 May 2010 | Dissolved | |
Atesta Group Limited Director • Chartered Chemist | 1 May 2002←8 Years→1 May 2010 | Dissolved | |
