| Company | Timeline | Status | |
| Student Loans Company Limited Director • Chartered Engineer | 7 May 2019←6 Years→6 May 2025 | Active | |
| Errish Associates Limited Director • Director | 3 Jul 2018←4 Years→23 Aug 2022 | Dissolved | |
| Amber Train Limited Director • Chartered Engineer | 12 Nov 2015←3 Years→1 Oct 2019 | Dissolved | |
| Sonaspection Worldwide Limited Director • Chartered Engineer | 28 Jun 2013←5 Years→31 Oct 2018 | Active | |
| Sonaspection International Limited Director • Chartered Engineer | 28 Jun 2013←5 Years→31 Oct 2018 | Active | |
Ruane Inspection Samples Limited Director • Chartered Engineer | 31 Oct 2012←1 Year 4 Months→11 Mar 2014 | Dissolved | |
T P O'Neill Training Services Limited Director • Chartered Engineer | 31 Oct 2012←1 Year 4 Months→11 Mar 2014 | Dissolved | |
| Argyll Ruane Limited Director • Chartered Engineer | 31 Oct 2012←6 Years→31 Oct 2018 | Active | |
| Siantonas Ball Limited Director • Chartered Engineer | 1 Aug 2011←7 Years→31 Oct 2018 | Dissolved | |
| Nsar Limited Director • None | 6 Jan 2011←5 Years→10 Mar 2016 | Active | |
