| Company | Timeline | Status | |
| The Red House Management (Scarborough) Limited Director • Writer | 29 Mar 1999←20 Years→15 May 2019 | Active | |
| The Acme Script Company Limited Director • Writer | 15 May 1992←27 Years→16 Dec 2019 | Dissolved | |
| Tiderace Limited Director • Unreported | 1 Jan 1970←55 Years→Current | Active | |
| Roy Clarke Limited Director • Unreported | 1 Jan 1970←55 Years→Current | Active | |
