| Company | Timeline | Status | |
| Aylesbury Vale Parkway Limited Director • Railway Manager | 8 Jun 2006←2 Months→7 Aug 2006 | Active | |
| London Overground Rail Operations Ltd Director • Railway Manager | 6 Jan 2006←9 Months→16 Oct 2006 | Dissolved | |
| Coleshill Parkway Limited Director • Railway Manager | 1 Nov 2005←9 Months→7 Aug 2006 | Active | |
| John Laing Infrastructure Limited Director • Railway Manager | 21 May 2003←3 Years→11 Aug 2006 | Active | |
| John Laing Projects & Developments Limited Director • Railway Manager | 14 Jan 2003←3 Years→7 Aug 2006 | Active | |
| Arriva Trains Holdings Limited Director • Railway Director | 11 Jul 2002←4 Years→16 Oct 2006 | Active | |
| The Chiltern Railway Company Limited Director • Railway Manager | 9 Mar 1999←7 Years→16 Oct 2006 | Active | |
| M40 Trains Limited Director • Railway Manager | 9 Mar 1999←7 Years→16 Oct 2006 | Active | |
