| Company | Timeline | Status | |
| Castor Master Ltd Director • Director | 18 Nov 2020←1 Year 5 Months→19 Apr 2022 | Dissolved | |
| Cyber Network Defence Ltd Director • Director | 14 Sep 2010←15 Years→Current | Active | |
| Security Wizardry Limited Director • Consultant | 9 Nov 2006←18 Years→Current | Active | |
| Computer Network Defence Limited Director • Security Consultant | 3 Aug 2004←21 Years→Current | Active | |
