| Company | Timeline | Status | |
Gyrfa Cymru Gogledd Orllewin Cyfyngedig Director • Chairman | 30 Mar 1995←1 Month→10 May 1995 | Dissolved | |
| Tarmac UK Holdings Limited Director • General Manager | 17 Apr 1992←1 Year 6 Months→31 Oct 1993 | Liquidation | |
| Alfred McAlpine Slate Penrhyn Limited Director • General Manager | 17 Apr 1992←1 Year 6 Months→31 Oct 1993 | Active | |
