| Company | Timeline | Status | |
| Professionally Active 4 ALL Limited Director • Accountant | 1 Mar 2017←8 Years→Current | Active | |
| Ace Fasteners Limited Director • Unreported | 1 Jan 2016←9 Years→Current | Active | |
| Melissa Jayne Limited Director • Accountant | 25 Apr 2014←11 Years→Current | Active | |
| Melissa Jayne Limited Director • Accountant | 25 Apr 2014←10 Years→31 May 2024 | Active | |
| Siviter Wargames Limited Director • Unreported | 17 Apr 2014←11 Years→Current | Active | |
| Ace Fasteners Limited Director • Accountant | 16 Aug 2012←2 Years→1 Sep 2014 | Active | |
Siviter Hubbard Limited Director • Accountant | 9 Aug 2011←3 Years→1 Feb 2015 | Dissolved | |
| Siviter Greenfield Accountants Limited Director • Director | 23 Jun 2009←14 Years→7 May 2024 | Dissolved | |
| Siviter Yates Limited Director • Unreported | 23 Jan 2009←16 Years→Current | Active | |
| Halford Siviter Limited Director • Accountant | 18 Sep 2008←17 Years→Current | Active | |
