| Company | Timeline | Status | |
| James Walker Engineering Services Limited Director • Managing Director | 21 May 1998←1 Year 1 Month→25 Jun 1999 | Active | |
| James Walker Britco Limited Director • Director | 2 Aug 1993←5 Years→25 Jun 1999 | Dissolved | |
| 00351652 Limited Director • Director | 15 Jun 1992←9 Months→7 Apr 1993 | Dissolved | |
