| Company | Timeline | Status | |
| Industrial Noise Control Limited Secretary • Unreported | 14 Dec 2000←21 Years→8 Feb 2022 | Dissolved | |
| Industrial Noise Consultancy Limited Director • Director | 14 Dec 2000←6 Years→1 Feb 2007 | Active | |
| Industrial Noise Reduction Limited Director • Project Manager | 1 May 2000←25 Years→Current | Active | |
