| Company | Timeline | Status | |
| Network Rail Infrastructure Limited Director • Company Director | 26 May 1999←2 Years→18 Jun 2001 | Active | |
| CTRL (UK) Limited Director • Company Director | 10 Sep 1998←2 Years 9 Months→18 Jun 2001 | Active | |
| Yorkshire Electricity Group Plc Director • Company Director | 25 May 1995←1 Year 10 Months→5 Apr 1997 | Active | |
| Delta Limited Director • Company Director | 1 Aug 1994←9 Years→5 May 2004 | Active | |
| SGB Investments Limited Director • Company Director | 21 Jul 1993←1 Year 10 Months→12 Jun 1995 | Active | |
| Harsco Infrastructure Services Limited Director • Company Director | 30 Jun 1993←1 Year 11 Months→12 Jun 1995 | Active | |
| Carillion Mena Limited Director • Company Director | 1 May 1993←1 Year 1 Month→8 Jun 1994 | Liquidation | |
John Mowlem Construction Limited Director • Company Director | 1 Feb 1993←2 Years 4 Months→12 Jun 1995 | Dissolved | |
| Harsco Infrastructure Group Limited Director • Company Director | 1 Feb 1993←2 Years 4 Months→12 Jun 1995 | Active | |
| Invensys Limited Director • Director | 22 Sep 1992←10 Years→23 Jul 2003 | Active | |
