| Company | Timeline | Status | |
| P. Derbyshire & Sons (Property) Limited Director • Brass Founder | 31 Dec 1991←34 Years→Current | Active | |
Derbyshire Castings Limited Director • Brass Founder | 31 Dec 1990←20 Years→28 Mar 2011 | Dissolved | |
| P. Derbyshire & Sons (Property) Limited Director • Unreported | 1 Jan 1970←56 Years→Current | Active | |
