| Company | Timeline | Status | |
| Welsh Slate Limited Director • Finance Director | 24 Dec 2007←11 Years→28 Jan 2019 | Active | |
| Cwmorthin Slate Quarry 1994 Company Limited Director • Company Director | 24 Dec 2007←11 Years→28 Jan 2019 | Active | |
| Cocklebank Conservations Limited Director • Company Director | 24 Dec 2007←11 Years→28 Jan 2019 | Active | |
| Alfred McAlpine Slate Penrhyn Limited Director • Company Director | 24 Dec 2007←11 Years→28 Jan 2019 | Active | |
| CWT-Y-Bugail Slate Quarries,Limited(The) Director • Company Director | 24 Dec 2007←11 Years→28 Jan 2019 | Active | |
Alfred McAlpine Slate Limited Director • Finance Director | 13 Apr 2007←8 Months→24 Dec 2007 | Active | |
| Carillion Asset Management Limited Director • Finance Director | 18 Jan 2002←5 Years→7 Mar 2007 | Liquidation | |
Alfred McAlpine Pension Trustees Limited Director • Finance Director | 27 Nov 2001←6 Years→24 Dec 2007 | Dissolved | |
