| Company | Timeline | Status | |
| Turnbull Family Aviation Limited Director • Company Director | 18 Feb 2024←1 Year 8 Months→Current | Active | |
| Turnbull Family Investments Limited Director • Company Director | 6 Oct 2020←5 Years→Current | Active | |
| Arlington (Milburngate) Limited Director • Company Director | 15 Sep 2020←5 Years→Current | Active | |
| Kefco Precision Engineers (Peterlee) Limited Director • Company Director | 23 Jul 2020←6 Months→19 Jan 2021 | Dissolved | |
| GT Envirotec Limited Director • Company Director | 23 Jul 2020←6 Months→19 Jan 2021 | Dissolved | |
| GT Technology Limited Director • Company Director | 23 Jul 2020←11 Months→6 Jul 2021 | Dissolved | |
| Turnbull Seals And Mouldings Limited Director • Company Director | 23 Jul 2020←8 Months→13 Apr 2021 | Dissolved | |
| Turnbull Family Developments Limited Director • Operations Manager | 19 Feb 2019←6 Years→Current | Active | |
