| Company | Timeline | Status | |
| Teratus Limited Director • Company Director | 3 May 2017←6 Years→17 Jan 2024 | Active | |
| Keswick Cottages Limited Director • Company Director | 21 Feb 2017←6 Years→17 Jan 2024 | Active | |
| APMW Holdings Limited Director • Company Director | 7 Feb 2017←6 Years→17 Jan 2024 | Active | |
| Kirkcross Developments Limited Director • Director | 11 Mar 2013←5 Years→18 Jun 2018 | Active | |
Summit 1 Technology Limited Director • Engineer | 12 Jul 2007←1 Year 6 Months→27 Jan 2009 | Dissolved | |
5north Development Limited Director • Company Director | 20 Jun 2007←3 Years→18 Jan 2011 | Dissolved | |
Thermastrate Ltd Director • Consultant | 20 Dec 2006←2 Years 11 Months→11 Dec 2009 | Dissolved | |
APMW Limited Director • Company Director | 29 Mar 2004←14 Years→27 Nov 2018 | Dissolved | |
| Alan Polkinghorne Limited Director • Electronics Engineer | 1 Mar 1991←32 Years→17 Jan 2024 | Dissolved | |
