| Company | Timeline | Status | |
| Duncan Plumbing Ltd Director • Director | 11 Oct 2021←4 Years→Current | Active | |
| S C Duncan Defence Services Ltd Director • Director | 9 Jul 2020←3 Years→18 Jul 2023 | Dissolved | |
| S C Duncan Stevenage Ltd Director • Director | 9 Jul 2020←5 Years→Current | Liquidation | |
| S C Duncan Group Ltd Director • Director | 8 Jul 2020←3 Years→18 Jul 2023 | Dissolved | |
| S C Duncan Plumbing & Heating Limited Director • Company Director | 10 Sep 2015←10 Years→27 Sep 2025 | Dissolved | |
| Greaves & Graham Consulting Ltd Director • Consultant | 11 Dec 2014←10 Years→Current | Active | |
HT Personnel Ltd Director • Technical Recruitment Agent | 26 Aug 2009←3 Months→30 Nov 2009 | Dissolved | |
PTS Technical Recruitment Limited Director • Director | 5 Feb 2009←9 Months→30 Nov 2009 | Dissolved | |
| Graham Rose Limited Director • Director | 26 Nov 2007←17 Years→Current | Active | |
