| Company | Timeline | Status | |
| Antur Cwe Cyf Director • Engineer (retired) | 21 Dec 2016←8 Years→Current | Active | |
| Clough Williams-Ellis Nominee Company Limited Director • Engineer | 17 Mar 2016←9 Years→Current | Active | |
| Portmeirion Properties Limited Director • Engineer | 7 Jul 2009←16 Years→Current | Active | |
| Portmeirion Limited Director • Consulting Engineer | 11 Sep 1992←33 Years→Current | Active | |
| Ove Arup & Partners International Limited Director • Geotechnical Engineer | 22 May 1992←9 Years→1 Oct 2001 | Active | |
