| Company | Timeline | Status | |
| The Railway Performance Society Foundation Limited Director • Retired | 20 May 2023←2 Years 5 Months→Current | Active | |
| The Railway Performance Society Limited Director • Retired | 20 May 2023←2 Years 5 Months→Current | Active | |
| The Railway Performance Society Foundation Limited Director • Railway Operator | 21 May 2016←5 Years→22 May 2021 | Active | |
| Nigel Smedley Limited Director • Director | 30 Sep 2005←20 Years→Current | Active | |
| RPS Rail Performance Consultants Limited Director • It Professional | 31 Jul 2002←5 Years→10 May 2008 | Dissolved | |
| The Railway Performance Society Limited Director • It Professional | 17 Jul 2002←5 Years→10 May 2008 | Active | |
| Gemini Applications Limited Director • It Project Manager | 6 Jun 2000←8 Years→18 Jul 2008 | Active | |
