| Company | Timeline | Status | |
| Devol Cast Nylon Limited Secretary • Company Secretary | 2 Jun 2008←10 Years→31 Aug 2018 | Active | |
| Devol Moulding Services Limited Secretary • Company Secretary | 2 Jun 2008←10 Years→31 Aug 2018 | Active | |
| Devol Fabrications Limited Secretary • Company Secretary | 2 Jun 2008←10 Years→31 Aug 2018 | Active | |
| Devol Bushing Limited Secretary • Company Secretary | 2 Jun 2008←10 Years→31 Aug 2018 | Active | |
| Devol Engineering Limited Secretary • Company Secretary | 2 Jun 2008←10 Years→31 Aug 2018 | Active | |
| JWPS Trustees Limited Director • Chartered Secretary | 13 Feb 2006←14 Years→5 Aug 2020 | Active | |
| Jwsempp Trustees Limited Director • Chartered Secretary | 13 Feb 2006←1 Year→14 Feb 2007 | Active | |
| James Walker Britco Limited Secretary • Unreported | 27 Jan 2006←19 Years→Current | Dissolved | |
| James Walker Nominees Limited Secretary • Unreported | 27 Jan 2006←12 Years→31 Aug 2018 | Active | |
| James Walker Trustees Limited Secretary • Unreported | 27 Jan 2006←12 Years→31 Aug 2018 | Active | |
