| Company | Timeline | Status | |
| Corinne Welch Ltd Director • Director | 1 Apr 2025←6 Months→Current | Active | |
| Building Sciences Limited Director • Building Physics Consultant | 25 Mar 2008←2 Years 4 Months→6 Aug 2010 | Active | |
| Four Walls Consultants Limited Director • Managing Director | 8 Nov 2005←19 Years→Current | Active | |
